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全部话题 - 话题: metals
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c****e
发帖数: 1628
1
注意这段话"Current evidence from archaeology indicates that cast iron was
first produced in Europe at two sites in Sweden, Lapphyttan and Vinarhyttan,
sometime between 1150 and 1350"并且有可能是蒙古人从中国带过去的。
中国汉代就知道把生铁和“熟铁”合炼,调节铁碳含量而成钢。也就是所谓的“灌钢
”。
在欧洲,直到17世纪才认识到这一点。
Medieval Iron and Steel -- Simplified
Bert Hall
Institute for the History and Philosophy of Science and Technology
University of Toronto
----------------------------------------------------------------------------
----
Iron is one of the most us... 阅读全帖
c****e
发帖数: 1628
2
注意这段话"Current evidence from archaeology indicates that cast iron was
first produced in Europe at two sites in Sweden, Lapphyttan and Vinarhyttan,
sometime between 1150 and 1350"并且有可能是蒙古人从中国带过去的。
中国汉代就知道把生铁和“熟铁”合炼,调节铁碳含量而成钢。也就是所谓的“灌钢”。
在欧洲,直到17世纪才认识到这一点。
Medieval Iron and Steel -- Simplified
Bert Hall
Institute for the History and Philosophy of Science and Technology
University of Toronto
----------------------------------------------------------------------------
----
Iron is one of the most use... 阅读全帖
t*******a
发帖数: 4055
3
来自主题: Military版 - 德国34年来最强势大罢工
德国34年来最强势大罢工:要求每周只上28小时班
1评论
2018-01-23 22:51:14 来源:直观学机械 上市公司绝密调研报告
外媒报道,德国数以万计产业界劳工周二加入罢工行列,支持IG Metall工会的诉求。
该工会要求将每周工作时间从35小时缩减至28小时,这将是近年来最“苛刻”的要求。
据路透柏林/法兰克福1月16日报道,德国数以万计产业界劳工周二加入罢工行列,
支持IG Metall工会的诉求。该工会要求将每周工作时间从35小时缩减至28小时,这将
是近年来最“苛刻”的要求。
德国34年来最强势大罢工:要求每周只上28小时班
德国劳工自上周以来即展开此类警告式的罢工行动,罢工总人数达42.5万名。其中
包括戴姆勒的1万名员工,Schaeffler、博世公司、ZF Friedrichshafen、西门子、宝
马汽车和欧司朗等公司员工周二也加入了罢工的行列。
拥有近230万名成员的IG Metall是欧洲最大的工会,它代表了机械制造、冶金、汽
车、电子产品甚至纺织企业的雇员。工会负责人克劳迪娅·柯尼格表示:“我们正努力
争取更灵活的工作时间安排。自1984年争取35小时... 阅读全帖
f*******e
发帖数: 3433
4
1篇。大部分都是放导师的名。还完全不能证明自己独立研究。我认识一在美国教授,
每年nature子刊都超过5篇
22. Lei Fan, Houlong L. Zhuang, Kaihang Zhang, Valentino R. Cooper, Qi Li,
and Yingying Lu, Chloride-Reinforced Carbon Nanofiber Host as Effective
Polysulfide Traps in Lithium–Sulfur Batteries, Adv. Sci. 2016, 1600175
21. Qi Li, Juner Chen, Lei Fan, Xueqian Kong, Yingying Lu, Progress in
electrolytes for rechargeable Li-based batteries and beyond, Green Energy &
Environment 1 (2016) 18-42
20. Zheng Lianga, Dingchang Lina, Jie Zhaoa, Zhenda L... 阅读全帖
y***j
发帖数: 11235
5
Cost
Metal framing studs typically cost less than wood studs. This cost
savings is somewhat mitigated by the cost of electrical boxes, plastic wire
grommets, screws and moldings.
Convenience
Metal framing studs are more convenient than wood studs because they
are lighter and easier to transport. Also, using metal studs eliminates
messy sawdust piles during cutting.
Strength
Lack of strength is a major disadvantage of metal framing studs.
They can only be used ... 阅读全帖
l****m
发帖数: 1294
6
Furnace去年装的,permit也申了。但是city检查的时候根本没看出plenum有问题 (这
个plenum位于coil和furnace之间)。
最近刚发现plenum没封严。我自己把它拆开了,图片在2楼,第一张图片是全景,第
二张是后侧和右侧的sheet metal (一体的看着还装的不错),最后一张是左侧的,
显示根本就没和后侧的sheet metal装在一起,就是那么搭上的,从外面和前面不仔
细看看不出来什么。
这个问题我可以自己修吗?主要是考虑安全的问题。
安furnace的人好像是用的2张sheet metal板,我是不是应该用4张,先将银色bubble的
isolation层粘在coil和furnace上,然后将后面的那种sheet metal板下端用螺丝固定
在furnace上,再装左侧和右侧的sheet metal,将这2块板用螺丝下端固定在furnace上
,里侧固定在后侧的那张sheet metal上。
然后是密封问题,是用silicone,还是用foil tape 还是用mastic,或者像我的
contractor那样先用foil tape再刷了层mas... 阅读全帖
l****m
发帖数: 1294
7
Furnace去年装的,permit也申了。但是city检查的时候根本没看出plenum有问题 (这
个plenum位于coil和furnace之间)。
最近刚发现plenum没封严。我自己把它拆开了,图片在2楼,第一张图片是全景,第
二张是后侧和右侧的sheet metal (一体的看着还装的不错),最后一张是左侧的,
显示根本就没和后侧的sheet metal装在一起,就是那么搭上的,从外面和前面不仔
细看看不出来什么。
这个问题我可以自己修吗?主要是考虑安全的问题。
安furnace的人好像是用的2张sheet metal板,我是不是应该用4张,先将银色bubble的
isolation层粘在coil和furnace上,然后将后面的那种sheet metal板下端用螺丝固定
在furnace上,再装左侧和右侧的sheet metal,将这2块板用螺丝下端固定在furnace上
,里侧固定在后侧的那张sheet metal上。
然后是密封问题,是用silicone,还是用foil tape 还是用mastic,或者像我的
contractor那样先用foil tape再刷了层mas... 阅读全帖
s*****1
发帖数: 2312
8
来自主题: GunsAndGears版 - AMMO Abbreviations
ACP – Auto Colt Pistol
BALL – Full Metal Jacket
BCHP – Bonded Core Hollow Point
BCSP – Bonded Core Soft Point
(Bonded or Bonded Core – a bullet in which the lead core is soldered or
chemically bonded to the copper alloy jacket)
BT – Boat Tail
CTFB – Closed Tip Flat Base
Dum-Dum – Flat Nose (usually with X cut in nose)
FMC --- Full Metal Case
FMCF – Full Metal Case Flat
FMJ – Full Metal Jacket
FMJF – Full Metal Jacketed Flat
FNEB – Flat Nose Enclosed Base
FP – Flat Point
Frangible – Limited Penet... 阅读全帖
g****n
发帖数: 7494
9
来自主题: TVGame版 - konami又来圈钱了
尼玛,没有节操啊
妇科还出这么多版本,现在已有的是PSV(2&3合集),3DS(3),PS3/XBOX(2,3,
peace walker合集)
这次是
Metal Gear
Metal Gear 2
Metal Gear Solid 1 (code)
Metal Gear Solid 2: HD edition
Metal Gear Solid 3: HD edition
Metal Gear Solid 4: Trophy edition
Metal Gear Solid: Peace Walker HD edition
Metal Gear Solid: VR missions (code)
and 100 Page artbook
O*******d
发帖数: 20343
10
铜和阳极铝根本不在考虑之列。
Despite the great numbers of metals and alloys known to man, remarkably few
warrant even preliminary consideration for uses as implant materials. The
relatively corrosive environment combined with the poor tolerance of the
body to even minute concentrations of most metallic corrosion products
eliminates from discussion most metallic materials. Of the possible metallic
candidates, tantalum and the noble metals do not have suitable mechanical
properties for the construction of most ... 阅读全帖
c****e
发帖数: 1984
11
来自主题: ebiz版 - 原来m.com 是这么回事
Hello from Amazon,
Thank you for selling on Amazon.com. Your success is important to us, and we
are constantly working to find opportunities to help you grow your sales.
We want to make you aware of a limited-time opportunity to receive reduced
referral fees when selling with Fulfillment by Amazon.
If you sell a select list of Nintendo consoles on Amazon.com using
Fulfillment by Amazon (FBA) from October 1, 2012, through January 15, 2013,
then Amazon will apply a referral fee rebate worth up to ... 阅读全帖
I********e
发帖数: 1155
12
来自主题: ebiz版 - 论神医的修养
CA-soimbox 6:38:11 PM
大飞
请教一个问题
假如有一个刚体的盒子
这个刚体的盒子不会发生任何形变和热传导
在刚体的盒子中爆炸一个氢弹
盒子里面的温度会随时间降低吗?
ma-patrickcp(26574343) 6:38:14 PM
这个问题不对吧
ma-patrickcp(26574343) 6:38:26 PM
问题本身有问题
OH-guaifei(18812330) 6:38:28 PM
盒子里面有啥东西啊?
OR-metal(1346266800) 6:38:34 PM
会热辐射吧
CA-soimbox 6:38:39 PM
真空
OH-guaifei(18812330) 6:38:40 PM
只有一个氢弹么?
CA-soimbox 6:38:45 PM

OR-metal(1346266800) 6:38:59 PM
热传递有3种方式啊
CA-soimbox 6:39:21 PM
就是完全理想的刚体
CA... 阅读全帖
i*******r
发帖数: 3
13
劝大家还是别海归了。你们是斗不过中国的土博的。
说说长江学者吧。该奖项是中国特聘教授的最高级别,要求“学术造诣高深,在科学研
究方面取得国内外同行公认的重要成就;具有创新性、战略性思维,具有带领本学科赶
超或保持国际先进水平的能力”。然而看了中南大学2011长江学者刘文胜的个人简历后
,本人寒心了:
刘文胜,中国籍,男,1967年生,博士,教授,博士生导师,中共党员。刘文胜先生长期从事
航空制动系统、钛铝合金、无铅焊料和难熔合金材料的研究工作。作为项目执行负责人
之一,承担了国防科工委国债技改项目“军用钨基高比重合金生产线”、“轻质高强结
构材料国防科技重点实验室”的立项和建设工作;作为项目负责人承担了国家“863”高
技术研究计划重点项目,国家自然科学基金项目,国防军工配套项目,国防基础科研项目,
国际合作项目及省部级项目等近10项,并取得了较好的研究成果,得到了同行专家的一致
好评。在国内外知名刊物上公开发表学术论文30余篇,其中被EI收录18篇,被SCI收录11
篇,申请国家发明专利5项,出版专著1部,获省部级科技进步一等奖2项。现任中南大学粉
末冶金研究院党委书记兼副院长,粉末... 阅读全帖
m**x
发帖数: 75
14
http://www.marketoracle.co.uk/Article21284.html
Government Moves to Tax, Track All Gold Transactions
Commodities / Gold and Silver 2010 Jul 21, 2010 - 01:45 PM
By: Mac_Slavo
Commodities
Best Financial Markets Analysis ArticleWhen Nancy Pelosi said we have to
pass the bill before we can find out what’s in it, few had any idea that
the Obama health care legislation would expand well beyond the health care
industry.
According to an ABC news report, the new 1099 provisions in the health care
bill, w... 阅读全帖
H********i
发帖数: 699
15
来自主题: Stock版 - 今天金银跌的主要原因
Is Soros Right to Get Out of Gold?
Major players, including George Soros, are reportedly pulling back from gold
and silver has recorded yet another collapse.
The Federal Reserve remains dovish, the US macroeconomic picture looks shaky
, but gold has still fallen back, so should investors stick with precious
metals?
The Wall Street Journal reported on Thursday morning that George Soros'
eponymous fund has been easing itself out of the yellow metal and is also
getting out of silver (Exchange: XAG=... 阅读全帖
c********r
发帖数: 128
16
来自主题: Stock版 - 52 week high list in last month
If you want this list sent to your email every day, please reply with
your email or send your email to my mailbox.
If you just want to view the report, you can visit
http://www.traviancompanion.com/simmarket/report
11/15/2011 ISRG $448.77 224,500 Medical Appliances Equipment
11/15/2011 MA $371.33 888,800 Business Services
11/15/2011 PNRA $137.75 335,200 Specialty Eateries
11/15/2011 GR $123.35 1,435,900 Aerospace Defense Products
S... 阅读全帖
B******e
发帖数: 16928
17
就是中国土壤污染问题严重,每天吃饭相当于慢性中毒,这个基本问题不解决剩下的都
是浮云。
The bad earth:The most neglected threat to public health in China is toxic
soil
And fixing it will be hard and costly
Print edition | Briefing
Jun 8th 2017 | SHIQIAO, HUNAN PROVINCE
TANG DONGHUA, a wiry 47-year-old farmer wearing a Greenpeace T-shirt, smokes
a cigarette and gesticulates towards his paddy fields in the hills of
southern Hunan province. The leaves of his rice plants poke about a foot
above water. Mr Tang says he expects to harvest about ... 阅读全帖
B*********e
发帖数: 86
18
来自主题: LeisureTime版 - 苍蝇之王zz
([email protected])
回帖_BiggeyIssue_to wonderingmm jiuselu Asdfeqo et al_mitbbs_2018-03-08 ~ 03
[email protected]_1633-.docx
([email protected])
回帖_BiggeyIssue_to wonderingmm jiuselu Asdfeqo et al_mitbbs_2018-03-08 ~ 03
[email protected]_2224-.docx
([email protected])
回帖_BiggeyIssue_to wonderingmm jiuselu Asdfeqo et al_mitbbs_2018-03-08 ~ 03
[email protected][email protected]_2330-_.docx
([email protected])
回帖_BiggeyIssue_to wonderingmm jiuselu Asdfeqo et a... 阅读全帖
h*k
发帖数: 520
19
wow...there are tons of them...
but here i don't know the term "heavy metal" means traditional heavy metal o
r in a broad sense of metal music.
basically, metal after 90' is more brutal and extreme than before. many band
s shine after 90' are from extreme metal like death metal or black metal.
p********3
发帖数: 5750
20
50, 70, 71; 大家注意一下和这几篇文献相关的话题。 另外, 73-75我本人没有看,确实是谈的印度药材, 我在查阅参考文献的时候在搜索Chinese Medicine的时候, 显示有这些文献,我本人没有亲自看这些文献, 也许其中有讲中药的地方。不过这不影响我要表达的意思。
慢慢看:
INTRODUCTION — Plants have been used for medicinal purposes for thousands
of years. All major cultures including Native American, European, South
American, Asian, and African cultures have used botanicals for healing
purposes. As an example, saw palmetto was used for urinary symptoms in men
from Egypt in the 15th century BC [1]. Hippocrates documented... 阅读全帖
p******n
发帖数: 55
21
来自主题: Biology版 - 颜宁这个AMC award含金量如何?
http://www.grc.org/amc.aspx
熟悉的名字不少啊
2016 Lecturers
◾Nieng Yan, Membrane Transport Proteins
◾Xiaowei Zhuang, Synaptic Transmission
◾Christopher J. Chang, Metals in Medicine
◾Mikhail Lukin, Quantum Science
2015 Lecturers
◾Karl Deisseroth, Amygdala in Health & Disease
◾David M. Sabatini, Lysosomal Diseases
◾Laura Kiessling, Carbohydrates
◾Gerbrand Ceder, Physical Metallurgy
◾Liang Fu, Superconductivity
2014 Lecturers
◾Kristi S. Anseth, Si... 阅读全帖
l********s
发帖数: 358
22
来自主题: EE版 - 问两个VLSI的Interview问题
在网上看到的这两个interview问题
1. You have three adjacent parallel metal lines. Two out of phase signals
pass through the outer two metal lines. Draw the waveforms in the center
metal line due to interference. Now, draw the signals if the signals in
outer metal lines are in phase with each other.
out of phase: center metal line没有signal
in phase: center metal line的signal是和两边的一致
我不知道这样对不对,这应该是Crosstalk的问题吧
2. What happens if we increase the number of contacts or via from one metal
layer to the next?
是两层之间的r
w********h
发帖数: 12367
23
Rank Full Journal Title Journal Impact Factor
1 CHEMICAL REVIEWS 45.661
2 NATURE MATERIALS 36.425
3 Nature Nanotechnology 33.265
4 CHEMICAL SOCIETY REVIEWS 30.425
5 PROGRESS IN MATERIALS SCIENCE 25.870
6 ACCOUNTS OF CHEMICAL RESEARCH 24.348
7 Nature Chemistry 23.297
8 Nano Today 18.432
9 Annual Review of Materials Research 15.629
10 Energy & Environmental Science 15.490
11 ADVANCED MATERIALS 15.409
12 Advanced Energy Mate... 阅读全帖
ot
发帖数: 4549
24
召了很久找不到,到这里试试。必须有三类医疗器械工作经验,年限可以宽容一下,也
不一定非要是金属专业的。
POSITION DESCRIPTION
The individual will lead metal material science and engineering technology
development efforts in China. The individual will work with cross-functional
teams to fully leverage internal/external resources and provide materials
expertise to support product development for China and other Emerging
Markets. He/She will serve as a subject matter expert to interact
frequently with inter-organizational clients and outside custome... 阅读全帖
p*********e
发帖数: 32207
25
☆─────────────────────────────────────☆
yeemartin (猪头) 于 (Mon Aug 17 05:10:38 2009, 美东) 提到:
看了一篇的文章
有解释为啥Shell Rotella T、Mobil Delvac这些heavy duty diesel oil的Used oil
analysis结果都很突出的原因,普通engine oil是S certification,例如SJ、SM。商
用truck engine oil是C certification, 目前是CI、CJ。C的additive package比S的
牛x很多,但有可能会不兼容乘用车上的catalytic converter。
我的G35目前就在用Shell Rotella T,摩托车下次换油也准备用这个。mobil的
synthetic motorcycle oil 1 quart 12刀,受不了。
Commercial (Diesel) Oil
The additive packages for C (commercial) certification... 阅读全帖
w*******y
发帖数: 60932
26
Brutal Legend:
http://www.amazon.com/Brutal-Legend-Xbox-360/dp/B000XJNTPG
From the mind of Tim Schafer (Psychonauts, Grim Fandango) comes Brutal
Legend, the ultimate heavy metal action game starring Jack Black (School of
Rock, Tenacious D). You are heavy metal roadie Eddie Riggs, hurled back in
time to the mythical Age of Metal when the world was formed and ruled by the
power of Rock! Armed with a broadaxe, a guitar, and a big block V8 you set
off on an epic quest to assemble an army of headbang... 阅读全帖
c***s
发帖数: 70028
27
27岁的陆盈盈已是教授、博士生导师、“青年千人计划”入选者,并将回到母校浙大全职任教。
澎湃新闻报道 2月11日,千人计划网公示了第十一批“千人计划”青年人才名单,从去年8月申报工作开始至今,经过三层筛选,最终这份名单中的667人通过了评审。
在这批引进的“海归”青年才俊中,共有41名“85后”,而其中最年轻的陆盈盈则更是出生于1988年11月30日,堪称“学霸”。
中央2008年12月决定实施引进海外高层次人才的“千人计划”,该计划围绕国家发展战略目标,用5到10年时间,在国家重点创新项目、重点学科和重点实验室、中央企业和金融机构、以高新技术产业开发区为主的各类园区等,有重点的引进并支持一批海外高层次人才回国(来华)创新创业。
千人计划网称,截至2014年5月底,“千人计划”已分十批引进4180余名海外高层次人才。
5年前,陆盈盈才本科毕业。5年后,年仅27岁的她已是教授、博士生导师、“青年千人计划”入选者,并将回到母校浙大全职任教。
据浙江大学工程联合国家重点实验室网站“客座教授”栏目内陆盈盈简历:2010年6月,毕业于浙江大学化学工程与生物工程学院,获得学士学位,2014年6月获... 阅读全帖
o***s
发帖数: 42149
28
27岁的陆盈盈已是教授、博士生导师、“青年千人计划”入选者,并将回到母校浙大全职任教。
2月11日,千人计划网公示了第十一批“千人计划”青年人才名单,从去年8月申报工作开始至今,经过三层筛选,最终这份名单中的667人通过了评审。
在这批引进的“海归”青年才俊中,共有41名“85后”,而其中最年轻的陆盈盈则更是出生于1988年11月30日,堪称“学霸”。
中央2008年12月决定实施引进海外高层次人才的“千人计划”,该计划围绕国家发展战略目标,用5到10年时间,在国家重点创新项目、重点学科和重点实验室、中央企业和金融机构、以高新技术产业开发区为主的各类园区等,有重点的引进并支持一批海外高层次人才回国(来华)创新创业。
千人计划网称,截至2014年5月底,“千人计划”已分十批引进4180余名海外高层次人才。
5年前,陆盈盈才本科毕业。5年后,年仅27岁的她已是教授、博士生导师、“青年千人计划”入选者,并将回到母校浙大全职任教。
据浙江大学工程联合国家重点实验室网站“客座教授”栏目内陆盈盈简历:2010年6月,毕业于浙江大学化学工程与生物工程学院,获得学士学位,2014年6月获得美国康奈尔大... 阅读全帖
v******t
发帖数: 3404
29
谁说的,明明还在控制中
看时间:# guardian.co.uk, Sunday 31 October 2010 14.33 GMT
China's stranglehold on rare earth metals 'no threat to US security'
Pentagon study set to allay fears that Beijing may reimpose freeze on metals
vital to defence and technology
Labourers at a rare earth metals mine in Nancheng county, Jiangxi province,
China. Photograph: Reuters
China's near-monopoly on rare earth metals poses no threat to US security, a
Pentagon report is likely to conclude.
The year-long study, which will be ... 阅读全帖
v******t
发帖数: 3404
30
来自主题: Military版 - 中国不会对外出口稀土了
禁止出口就是禁止出口,就这样子。
看时间:# guardian.co.uk, Sunday 31 October 2010 14.33 GMT
China's stranglehold on rare earth metals 'no threat to US security'
Pentagon study set to allay fears that Beijing may reimpose freeze on metals
vital to defence and technology
Labourers at a rare earth metals mine in Nancheng county, Jiangxi province,
China. Photograph: Reuters
China's near-monopoly on rare earth metals poses no threat to US security, a
Pentagon report is likely to conclude.
The year-long study, which wil... 阅读全帖
g**1
发帖数: 10330
31
学霸又来:27岁女生成浙大教授、博导,5年前刚本科毕业
澎湃新闻记者 蒋子文
2015-02-26 07:40 来自 人事风向
27岁的陆盈盈已是教授、博士生导师、“青年千人计划”入选者,并将回到母校浙大全
职任教。
2月11日,千人计划网公示了第十一批“千人计划”青年人才名单,从去年8月
申报工作开始至今,经过三层筛选,最终这份名单中的667人通过了评审。
在这批引进的“海归”青年才俊中,共有41名“85后”,而其中最年轻的陆盈
盈则更是出生于1988年11月30日,堪称“学霸”。
中央2008年12月决定实施引进海外高层次人才的“千人计划”,该计划围绕国
家发展战略目标,用5到10年时间,在国家重点创新项目、重点学科和重点实验室、中
央企业和金融机构、以高新技术产业开发区为主的各类园区等,有重点的引进并支持一
批海外高层次人才回国(来华)创新创业。
千人计划网称,截至2014年5月底,“千人计划”已分十批引进4180余名海外高
层次人才。
5年前,陆盈盈才本科毕业。5年后,年仅27岁的她已是教授、博士生导师、“
... 阅读全帖
j*****o
发帖数: 638
32
来自主题: Military版 - 撸硬硬的论文
这位明显是搞炒菜的,一堆东西往锅里一丢,煮一煮,然后拿出来随便测一下,然后就
说是纳米新材料高性能,这些杂志都是超级水杂志,论研究意义不如生物,论理论水平
不如物理,论应用性更是屁都不是。
1. Y. Lu*, Z. Tu*, and L. A. Archer, Stable lithium electrodeposition in
liquid and nanoporous solid electrolytes, Nat. Mater. 13, 961-969, 2014. (*:
authors contributed equally to this work)
2. Y. Lu, S. K. Das, S. S. Moganty, L. A. Archer, Ionic liquid-nanoparticle
hybrid electrolytes and their application in secondary lithium-metal
batteries, Adv. Mater. 24, 4430-4435, 2012. This paper has been high... 阅读全帖
g********d
发帖数: 19244
33
☆─────────────────────────────────────☆
idee (The Unknown Singleton) 于 (Thu Jan 30 17:55:56 2014, 美东) 提到:
AT是靠齿轮,容易理解。以前scooter之类小engine
用橡胶皮带CVT还比较容易理解一点,马力小,橡胶不太滑。
汽车CVT就靠两个光滑如镜的斜面夹着一个光滑如镜的
金属链,而且不是夹死,还能随着宽度随时调整上下位置,
这东西怎么能挤住的同时还能灵活上下走还能高效率呢?我
主观想象一下觉得很容易打滑,时间长松了岂不是效率更会
降低很多?网上随便找找没找到关于打滑的讨论
☆─────────────────────────────────────☆
james824 (马扎罗) 于 (Thu Jan 30 18:00:54 2014, 美东) 提到:
铁链上有凸起,然后CVT上面是一条一条的凹槽,看起来可能就像空气滤清器那样吧,
这样铁链上的凸起可以嵌入凹槽,同时还可以移动。
猜的。
☆──────────────────────────────────... 阅读全帖
x*******6
发帖数: 994
34
Please contact recruiter directly.
MANUFACTURING ENGINEER – MILL PRODUCTS (#3902-MH389)
Our client, a well-established manufacturer of innovative, high-performance
metal products that are used in a wide range of applications and markets, is
searching for a Manufacturing Engineer to provide leadership to metal
forming operations that include rolling of plate, strip and foil. This
position is accountable for effective production, continuous improvement,
and new product development and is located n... 阅读全帖
w****5
发帖数: 64
35
你说的‘金属瓦片’是metal shingle吧。
Metal tile是地板或者墙面上用的,浴室里面用的比较多。我看过很多房子,只有几次
家里浴室用的是metal tile,还是装饰用的(并不全是metal tile)
Metal Shingle,房顶上的,很常见。重量也不重。都是很薄的一层。Metal Shingle也
有很多优点。
看到你的回复,我个人觉得Steel Jack是一个比较大的问题。Steel Jack支撑上面的建
筑,我相信这没有问题。房主应该是找比较专业的人做的,而且你应该可以找到permit
的资料。这种房屋改动,County里面肯定要permit才能施工的。查一下看看。
Steel Jack不能承担横向的受力,这是最大的问题。如果房屋是水平的晃动,Steel Jack不是绗架结构,
会最先失去稳性,侧倒。这就是为什么一般的房子,地基都是通过地下室,或者Craw
Space和上面的Beam,Joist形成框架结构,这样房屋的整体强度就会一下子提升很高。
(Beam固定在地基上至少要深入3英寸,这样即使有晃动,仍然能够保证房屋的整体性不
受影响。)
也有例外,日本
d**r
发帖数: 899
36
来自主题: Living版 - 螺丝钻不进墙壁
谢谢。这是我找到的最佳答案:
https://answers.yahoo.com/question/index?qid=20120414191139AAMHMVd
Use a stud finder to help you locate (possible) studs. Stud finders aren't a
lways 100% accurate. They can be fooled by metal, wiring, plumbing, and othe
r obstructions.
There may be nail plates where you're trying to attach the screws. A nail pl
ate is a strip of metal that fits over the stud and prevents anyone from scr
ewing and nailing in that area. Nail plates are used to protect plumbing and
wiring from peopl... 阅读全帖
c****8
发帖数: 33
37
怎么能当上海科大的副校长?
EDUCATION:
1990 Ph.D. Inorganic Chemistry, Purdue University
1982 Undergraduate Education, East China Normal University, Shanghai,
China.
EXPERIENCE:
1998- Professor of Chemistry, Southeast Missouri State University
1994- Associate Professor of Chemistry, Southeast Missouri State University
1990-1994 Assistant Professor of Chemistry, Southeast Missouri State
University
1993 summer NASA JOVE Research fellow, Lewis Research Center, Cleveland, OH.
1991 summer Visiting Professor,... 阅读全帖
s**********3
发帖数: 102
38
If you want to deal with scrap metal business in US:
1. Talk to dealer face to face,
2. bring with money order and your truck to load the metal;
3. there is no deposit, you see it and take it with payment;
4. No L/C, everything is cash;
5. You can check the scrape metal price at some newspaper with metal price.
In general the dealer knows the price.
6. There are lots of different kind of scrap metal: No.1 and No.2 copper and
steel bar etc...
7. Scrap Metal dealer won't come to this mitbbs web si
t****a
发帖数: 19
39
写文章讲究提纲挈领, 意思是先要抓住最关键的纲领, 然后再铺展开来. 做股票的FA
也是这样, 一定要先抓住该股票所属板块的纲. 对Moly来说, 它的纲就是它属于Minor
metal板块. 为什么这么说呢? 这是由于Minor metal有两大特点:
1. 它在地球中的储量远比Base metal少, 但又比Precious metal多不少.
2. Minor metal使用后不可回收. 这就意味着越用越少, 直到用光. 这一点很象石油.

常见的Minor metal有: Moly (钼), Cobalt (钴), Antimony (锑), Tungsten (钨),
Chromium (铬), 等等. (题外话: Cobalt这两年价格彪升, 比Moly更强) Moly的来源
有两种:
1. 60%的产量来自金铜矿 的Byproduct (很多金铜矿的矿石里并没有Moly);
2. 40%来自少量的独立的Moly矿, 既Prime mine product, 但矿石中的钼含量极低, 一
般Grade只有0.0x%.
Moly的主要用途为两块 :
1. 全球80%的
a*******8
发帖数: 2299
40
来自主题: Stock版 - Silver 的短期走势
贴个文章
Press Release Source: The Bedford Report On Friday January 28, 2011, 8:46 am
EST
NEW YORK, NY--(Marketwire - 01/28/11) - After touching 30 year highs to kick
off the New Year, silver prices have slumped in recent weeks. Most of the
selloff appears to stem from the idea that greater global economic stability
will make the precious metals market less attractive as an investment.
Silver, however, is as much an industrial metal as it is a precious metal,
leading many in the analyst community to... 阅读全帖
t*********e
发帖数: 313
41
Deutsche Bank Raises Price Target On Thompson Creek (TC) to $18
More News related to TC
Deutsche Bank Raises Price Target On Thompson Creek (TC) to $18
BCGold Corp. Appoints Darren O'Brien as Vice President, Exploration
BCGold Corp. Appoints Darren O'Brien as Vice President, Exploration
Canaccord Genuity Upgrades Thompson Creek Metals (TC) to Buy
Notable 52-Week Highs and Lows of the Day 01/03: SIRI, MCP, TC, JBL
High; ISPH Low
More News related to TC
More News related to Analyst Comments
Cubist... 阅读全帖
t*********e
发帖数: 313
42
Deutsche Bank Raises Price Target On Thompson Creek (TC) to $18
More News related to TC
Deutsche Bank Raises Price Target On Thompson Creek (TC) to $18
BCGold Corp. Appoints Darren O'Brien as Vice President, Exploration
BCGold Corp. Appoints Darren O'Brien as Vice President, Exploration
Canaccord Genuity Upgrades Thompson Creek Metals (TC) to Buy
Notable 52-Week Highs and Lows of the Day 01/03: SIRI, MCP, TC, JBL
High; ISPH Low
More News related to TC
More News related to Analyst Comments
Cubist... 阅读全帖
c*****r
发帖数: 529
43
Should You Trust Your Instincts on Gold?
Recent events in San Francisco and at La Guardia Airport made me recall a
terrifying experience years ago. It was my last flight of the year, and I
was headed home for Christmas. The plane was speeding down the runway to
take off, when the pilot suddenly reversed thrust and slammed on the brakes;
the plane shook like I have never experienced before as the pilot aborted
the takeoff. As we stopped mere feet from the end of the runway and caught
our breath, ... 阅读全帖
s*****i
发帖数: 5548
44
☆─────────────────────────────────────☆
xie91 (bob) 于 (Mon Mar 4 19:12:18 2013, 美东) 提到:
发信人: kylin1996 (kylin), 信区: SanFrancisco
标 题: Re: 再谈德州经验 (转载)
发信站: BBS 未名空间站 (Mon Mar 4 17:16:16 2013, 美东)
看见有人说湾区收入高就笑了,给你们科普一下,猴子屯,13-15w年薪非常普通,20w
以上的一大把,加上公司100% match 6-12% 401k, 公司服务到退休有一次性上百万的
pension,还有一周工作四天一周工作五天,每年5周vacation,加州风景再美,这些能
比吗?
☆─────────────────────────────────────☆
delubo (I shall be your eyes!) 于 (Mon Mar 4 19:13:42 2013, 美东) 提到:
求介绍工作,我要跳槽
☆────────────────────────────... 阅读全帖
k*****r
发帖数: 314
45
this the genre I mainly immerse in and get excited with
From thrash evolved black and death metal- two major genres of metal -and th
eresince bred out melodic death ,synphonic black, doom metal , gothic metal,
opera metal and so on.
it''s these thrash metal albums that accompanyed me for years ,comforted me
when feeling bad and alleviated the uneasy cosmic loneliness
h*d
发帖数: 19309
46
我觉得他们也就少量配器有点heavy metal的味道,整体顶多是nu-metal这种鱼龙混杂
的东西,不过wiki有人不这么看。
wiki
Genre(s) Alternative Metal[1]
Heavy metal[1]
Hard Rock[1]
Experimental rock[2]
Alternative rock[2]
Avant-garde metal[3]
Nu-Metal[4]
A***s
发帖数: 109
47
乐队名字
我特别喜欢其中一张讲回到前世的专辑
梦剧场的剧本。
故事中有五位人物分別是:
1. 催眠師:主導Nicholas的全程催眠治療
2. Nicholas:一位經常為夢境中的女孩所困擾,終日惶惶不安,睡不成眠,不得不求
助於催眠治療,回到前世一探究。
3. Victoria:Nicholas的前生,因男友Julian嗜賭成癮,屢勸不聽,在灰心之餘讓Ed
乘虛而入,譜了一段三角畸戀,終至招來殺生之禍。
4. Julian (Sleeper):Victoria的男友,因沈迷於賭,而且死得不明不白的,所以又
稱為Sleeper。
5. Ed(Miracle):Julian的弟弟,在Victoria傷心無助的情況下給了Victoric "奇蹟"
似的撫慰,而自己平白無故"奇蹟"似的博得佳麗的芳心,所以又稱為Miracle。
故事源起於一位叫作Nicholas的男子,經年累月的為同樣一種的夢境所困擾,令他寢食
難安,夢境中有一條羊腸小徑,通往一間寒氣逼人的房子,延著房內的樓梯往上走,在
頂端有一個房間,裏頭有一面鏡子,而鏡中是一位憂愁的少女影像。他知道事出必有因
,或許與前世的因果有關,於... 阅读全帖
c********n
发帖数: 225
48
第五篇 Tag! You’re it.
这篇回顾一下用His-tag纯化蛋白带来的一些花絮。
每个蛋白都有自己的脾气,所以表达和纯化他们其实就有点像cooking,从原材料的准
备,配方到调味,把握火候,最后色香味俱全才可能成为一道佳肴 – 对于蛋白就是要
达到有其对应的生物活性了。每每看到“保证型”蛋白表达服务的宣传,心里笑一下,
然后就会想到自己的一个“秘密武器” – 有一个融合蛋白确实可以达到几乎100%的高
效表达, 只是都在包涵体里。从另一方面来讲,如果没有时间和经费的限制,确实每
一个蛋白只要花功夫去做,最后都能达到100%成功率,得到有生物活性的终产物。
大部分人的时间和经费都有限,也不是每一个人都有耐心或有必要成为大厨, 那么就
有了purification tag。 His-tag是个经典。说起Histidine这个氨基酸,它的
imidazole side chain的pKa在6左右,这个特性让Histidine成为很多酶的活性中心的
一个重要组分, 这方面这次就不多讲了;另一方面,histidine也是个很好的metal
chelator, 是很多metallop... 阅读全帖
c******k
发帖数: 1140
49
测量一个本组人员制作的QW半导体光放大器,通过wire bonding 把器件的P metal/N
metal 连接到一个电路板上,电路板上有个connector的,用来连接电流源。
但是电流源报错,说电路open. 于是我用万用表测量conector 的Pin 1 (laser anode
) 和电路板上P metal的连接是否良好。结果它的电阻是40欧姆。再测量conector 的
Pin 2 (laser cathode)和电路板上N metal的连接,它的电阻是20欧姆。正确来说这
些电阻都应该为零,可能焊接conector的时候接触不好了,是不是这些欧姆导致电流源
认为电路是断的?
一般来说,QW半导体光放大器的P metal/n metal之间的电阻有多大?多谢!!
h*d
发帖数: 19309
50
http://www.vh1.com/news/222970/hard-rock-new-bands/
I often talk about the connections between metal and rock music. As far as I
am concerned, metal is just rock’s pissed off younger brother. As a
budding teenager discovering heavy music, my gateway was hard rock with a
metallic slant like Guns N Roses and Alice In Chains, or thrash metal bands
that were going through a rock-ish faze in the ’90s like Megadeth and
Metallica. The lines were very blurred from a categorization standpoint.
Before I b... 阅读全帖
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