x**8
发帖数: 4844 | 1 呵呵，说清楚这个stages,还得要费些口舌。
这履带的我今年会买一个，可能要开着走，推着走咋样只能明年告诉你。
切冰不会弄坏路面的，放心。
最后科普stages:
- 铲雪机的铲雪过程就是把雪卷进机器，再顺着那个烟囱（discharge chute）甩出去
到路边。
- 1-stage: 用impeller同时卷雪并顺势甩出机器
- 2-stage: 用auger卷雪，impeller甩雪
- 3-stage: 它的ａｕｇｅｒ分成两部分，两边的往中间卷，中间的那部分像一个风扇
，用来切割、绞碎两边的ａｕｇｅｒ卷过来的冰雪，再吸进去由impeller甩出去。而且
3-stage的转速快很多。
你的听明白了？ |
|
b*******r
发帖数: 205 | 2 这一两周一直在和contractor联络这个事情，也得到了版上各位，尤其是imore和sfxer
的指点和帮助，非常感谢！
现在基本圈定三个组合选项
A： Trane two stage variable speed XV80 4 ton 80k BTU
Bryant 14-15 seer 3 ton Slim Line AC
$6500
B: Carrier 2 stage variable speed 70k BTU 4 ton
Carrier 14-15 seer 3 ton Slim Line AC (model 24AHA436）
$6700
C: Carrier 58CTX Performance Series Two Stage: 80% 3 TON/ 66,000 BTUs/ 1385
CFM
Carrier Slim Line AC Performance Series 38HDR 13 SEER
$8000
A和B都是一个contractor的，因为我希望AC和Furance都是一个牌子的，而且版上讨论
Ca... 阅读全帖 |
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v**s
发帖数: 37 | 3 家在美国马里兰州，Twonhouse，三层，大概1400 sq ft。上周发现家里面空调很不给
力，很难降温。请空调师傅上门看过了，是漏氟。考虑到家里的HVAC已经20多年了，决
定换新的。目前老机子是Trane， AC是XE1000， heater是XE78. 找了家附近的几家公
司估价，上周估了两家，明天还有三家。目前有几个问题请教大家：
1. 两家公司各自给了几种选择，都是Carrier，从高效到普通，有single-stage和
two-stage。打算用80%效能的炉子和2.5 Ton，16 SEER的空调。但是不知道像我们家的
情况，是选择single还是two-stage的空调好。两个价格差别不大，选two-stage的顾虑
是会不会降温效果不好，还有就是以后的维护维修费用会不会很高。
2. 下面这款HVAC比较中意，不知道这个价格是否合理？
Option 3 – AHRI - 6389741 – 16 SEER / 13 EER
Carrier Model 58CVA070-12 – 80% Variable Speed Two Stage Gas Furn... 阅读全帖 |
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t*****y
发帖数: 296 | 4 最近更换了two stage的furnace，dealer安装了个two stage的thermostat。
问题是连接他俩的线还是5股的，没法从thermostat实现two stage的控制。
dealer说，furnace通过自己的timer来实现工作在two stage。如果要换成7股的线由
thermostat控制2个stage，要$175，再上门来一次。
这个two stage由furnace自己控制和由thermostat控制，差别大么？
值不值得把线也换了？
多谢！！！ |
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e***n
发帖数: 68 | 5 找老美报价，是American Standard system
Good-
Silver 14- 14 seer single stage 4 ton ac
Indoor coil
Silver SI+ - 80% efficient 100k btu single stage furnace
$4791
Better-
Silver 16- 16 seer single stage 4 ton ac
Indoor coil
Silver ZI- 95% efficient 100k btu single stage furnace
$6205
Best-
Gold 17- 17 seer two stage 4 ton ac
Indoor coil
Gold ZM- 97% efficient 100k btu two stage variable speed furnace
$8520
All of the above prices include material, labor, and tax.
All systems will have a 10 year parts war... 阅读全帖 |
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l******d
发帖数: 54 | 6 你这个太象我们去年学的developmental psychology的案例分析作业了。
依照Erikson的理论，“we develop through a predetermined unfolding of our
personalities in 8 stages. Our progress through each stage is in part
determined by our success, or lack of success, in all the previous stages.”
“Each stage involves certain developmental tasks that are psychosocial in
nature.”“If a stage is managed well, we carry away a certain virtue or
psychosocial strength which will help us through the rest of the stages of
our lives. On the other |
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c*****r
发帖数: 529 | 7 http://truthcdm.com/this-could-be-the-end-for-big-oil/
This Could be the End for Big Oil
stunning breakthrough in chemical engineering has unleashed a massive supply
of fuel…
Enough fuel, in fact, to power the entire globe for over 36,000 years.
It’s poised to decimate Big Oil’s obscene profits, make OPEC obsolete, and
hand the United States 100% energy independence.
In fact, the U.S. Department of Defense just invested $7 billion in a single
day…
Apple, Google, and Facebook are spending billion... 阅读全帖 |
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c**m
发帖数: 1457 | 8 I have sold multiple houses. I just sold a house with 10+ offers yesterday.
Here is my summary of works
that a good listing agent should do for you or with you:
1. Staging: give you advice on how to stage your house. Different staging
will make a huge differences. Or at least he can work with a staging
specialist on advising how to stage your house. I always
do staging with my clients myself;
2. Do CMA for you and give you advice on much the listing price should be;
this will be based on a lot ... 阅读全帖 |
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i*********5
发帖数: 19210 | 9 99th edition from June 30th to July 22nd 2012.
20 stages.
3,479 kilometers.
9 new stage towns.
9 flat stages.
5 mountain stages - two with a summit finish.
2 individual time-trial stages.
1 prologue.
+
4 promising intermediate mountain stages - one with a summit finish ! |
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V*****n
发帖数: 893 | 10 Version 9.1 1
Riding the Paceline
Prologue
A pace line is a group of riders who trade off the lead to share the effort
of riding in front so that the other
riders can rest in the draft that is created. Some of the benefits of a
paceline are safety, efficiency, and
speed. Pacelines that lack discipline can be annoying and even dangerous.
Stage One - Basics
Group Interaction
Individual energy contributes to the group energy. How an individual
interacts with the group is important
and can have an i... 阅读全帖 |
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H****r
发帖数: 16240 | 12 去上狩猎课就会讲到，猎手的几个阶段
——抄过来：
1. Shotting Stage
2. Limiting-Out Stage
3. Trophy Stage
4. Method Stage
5. Sportsman Stage
6. "Give-Back" Stage |
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H******S
发帖数: 6011 | 13 今天打的四个stage，速度偏慢，在打远处铁靶还是浪费了不少时间。今天第四个stage
有swinger，打得还不错，可惜contourHD没有自动调整曝光，打swinger的时候画面太
暗看不是太清楚，大家自己把屏幕按亮点吧，哈哈。
Update: 成绩出来了。和上次比速度提高2秒，名次下降两名。
Stage 1
Stage 2
Stage 3
Stage 4 |
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x*d
发帖数: 1696 | 14 If you don't do 2, your shoulder turn is not enough and probably not
consistent (two-hands-on are always more consistent because they limit each
other, even you don't feel so). Consequently your timing won't be consistent
. Shoulder turn is the biggest part of timing.
There are three stages of a stroke: Preparation, Initiating strike until the
ball contact, Follow through after ball contact.
The Preparation is the part we can work the most. We can make it perfect.
The more complete and consisten... 阅读全帖 |
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W********m
发帖数: 7793 | 15
Nothing I can do to the downswing, however, I tired not to get many chips in
the pot in the early stage, I would easy fold some big pocket pair. In the
late stage, play very aggressive with it. People tends to play more small
pair in the early stage when your 5BB raise is still only 100 chips. In the
late stage, they more likely would fold when you raise big. I would feel
better if I was bad beat in the late stage rather than in the early stage.
The other thing is always to chase 1st or 2nd pla |
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r******y
发帖数: 3838 | 16 【 以下文字转载自 Apple 讨论区 】
发信人: rhapsody ( input type=\"button\" value=), 信区: Apple
标 题: infinity blade 攻略
发信站: BBS 未名空间站 (Sat Dec 18 20:42:22 2010, 美东)
牛人呀。
http://forums.epicgames.com/showthread.php?t=754032&page=7
thought it might be interesting to describe how the lvl850 and lvl900
fights go.
My health is 6120, and my magic is 112. The high magic allows me to heal
much more often. It only takes 4
regular hits from the God King to kill me. His long swinging attacks do
double damage, and I think t... 阅读全帖 |
|
|
wh
发帖数: 141625 | 18 本篇发表于《Gettysburg Review》2003年夏季刊，李翊云从1978年一个反革命女孩的
死刑，写到她当时在幼儿园看到的反革命分子死刑前的游街，写到1991年她作为北大入
学生到河南信阳参加一年军训的经历。原文的排版更好看些：
http://www.gettysburgreview.com/selections/past_selections/deta
What Has That to Do with Me?
Yiyun Li
This story I am going to tell you, it is a true story.
The year was 1968. The girl was nineteen, the secretary of the Communist
Youth League for her class in a local high school in Hunan Province, China.
You probably don’t know much about Hunan, but I am sure you have heard... 阅读全帖 |
|
|
r******y
发帖数: 3838 | 20 牛人呀。
http://forums.epicgames.com/showthread.php?t=754032&page=7
thought it might be interesting to describe how the lvl850 and lvl900
fights go.
My health is 6120, and my magic is 112. The high magic allows me to heal
much more often. It only takes 4
regular hits from the God King to kill me. His long swinging attacks do
double damage, and I think that
attack he does in stage 2 and – where he steps back and does a large swipe
– does triple damage. Losing a
tapping battle results in getting hit w... 阅读全帖 |
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s**g
发帖数: 66 | 21 I guess the answer to Q1 shall be:
3 stage buffer approach leads to more jitter
Here is my reasoning:
single stage buffer jitter can be defined by
jtter_single = vn / slope
where vn is buffer input referred noise (assume the same in both cases),
slope is input signal rising/falling edge slope
since jitter from each stage is uncorrelated, we have
jitter_total = sqrt( N * (jitter_single)^2 )
where N is number of buffer stages
If we assume in both cases, buffer signal swing are the same Vswing and ... 阅读全帖 |
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k*****i
发帖数: 15 | 22 感谢多年来从mit上获得的帮助和信息，今天贴上自己的考经，希望对后继者有帮助。
一下大部分文字是考前两月写下的自己的感悟，由于考前高压，可能会条理不清，词不
达意，见谅。
不变应万变
对于难题要做到镇静，想想我不会的题目，多数人也未必会，镇静，镇静！镇静下来之
后才能慢慢寻找解题思路，难题的难点在于，题目信息不熟悉，备选答案内容不熟悉，
不要慌，想一想，出题者的思路在哪里，用自己熟悉的知识点去解决不熟悉的信息，这
就是apply的过程，比如genetic的题目。以不变应万变。
对于不会的题目，不要粘题，没有思路，跳过去，回头再想。有时是瞬时block out一
叶障目，后头再看的时候会发现豁然开朗。不值得浪费太多时间在一道题目上面。
关于排除法的应用，首先排除自己熟悉的选项，再排除自己不熟悉的选项，如果自己熟
悉的选项不能排除，怎么能排除自己根本看不懂的选项。解决方案：如果最后自己熟悉
的选项不能排除，还是选择自己熟悉的选项。因为太超范围，太偏太远的东西考的可能
性毕竟比较小，较大点的可能是可能是自己熟悉的，但是自己没有做到很好的apply或
者没有找到题干和答案的connection... 阅读全帖 |
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z******8
发帖数: 844 | 23 ☆─────────────────────────────────────☆
katieli (nina) 于 (Tue Apr 22 10:42:34 2014, 美东) 提到:
感谢多年来从mit上获得的帮助和信息，今天贴上自己的考经，希望对后继者有帮助。
一下大部分文字是考前两月写下的自己的感悟，由于考前高压，可能会条理不清，词不
达意，见谅。
不变应万变
对于难题要做到镇静，想想我不会的题目，多数人也未必会，镇静，镇静！镇静下来之
后才能慢慢寻找解题思路，难题的难点在于，题目信息不熟悉，备选答案内容不熟悉，
不要慌，想一想，出题者的思路在哪里，用自己熟悉的知识点去解决不熟悉的信息，这
就是apply的过程，比如genetic的题目。以不变应万变。
对于不会的题目，不要粘题，没有思路，跳过去，回头再想。有时是瞬时block out一
叶障目，后头再看的时候会发现豁然开朗。不值得浪费太多时间在一道题目上面。
关于排除法的应用，首先排除自己熟悉的选项，再排除自己不熟悉的选项，如果自己熟
悉的选项不能排除，怎么能排除自己根本看不懂的选项。解决方案：如果最后自己熟悉
的选项不... 阅读全帖 |
|
w********g
发帖数: 447 | 24 Outsourcing M&A Year In Review
By Michael A. Martorelli
Several large outsourcing firms made important tuck-in acquisitions, many
mid-sized firms expanded their platforms with strategic acquisitions, and
one outsourcing firm successfully tapped the equity market for an Initial
Public offering (IPO). But the big stories in the pharmaceutical outsourcing
industry in 2009 involved seven “going private” transactions and fifteen
separate divestitures. During the past few years, both in these annual
r... 阅读全帖 |
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f**d
发帖数: 768 | 25 这是一本计算神经科学的优秀著作，全文拷贝这里（图和公式缺），有兴趣的同学可以
阅读
如需要，我可以分享PDF文件（－－仅供个人学习，无商业用途）
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
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h*h
发帖数: 18873 | 26 很奇妙啊：
The Life Cycle(s) of a Monarch Butterfly
Monarch butterflies go through four stages during one life cycle, and
through four generations in one year. It’s a little confusing but keep
reading and you will understand. The four stages of the monarch butterfly
life cycle are the egg, the larvae (caterpillar), the pupa (chrysalis), and
the adult butterfly. The four generations are actually four different
butterflies going through these four stages during one year until it is time
to start over a... 阅读全帖 |
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c*********d
发帖数: 9770 | 27 张春桥：论对资产阶级的全面专政（On Exercising All-Round Dictatorship Over
the Bourgeoisie）
无产阶级专政问题，是长期以来马克思主义同修正主义斗争的焦点。列宁说“只有承认
阶级斗争、同时也承认无产阶级专政的人，才是马克思主义者。”
THE question of the dictatorship of the proletariat has long been the focus
of the struggle between Marxism and revisionism. Lenin said, “Only he is a
Marxist who extends the recognition of the class struggle to the recognition
of the dictatorship of the proletariat.” And it is precisely to enable us
to go by Marxism and not revisionism in both theory an... 阅读全帖 |
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C******g
发帖数: 2930 | 28 In the demo,you'll have access to two scenario stages, one playable with Ryu
and the other with Ayane. The Ryu stage is the first chapter of the game,
taking Ryu to the heights of a Tokyo building for a battle with a giant
Buddha statue. The Ayane stage is set in a winding maze of city streets
Different from Ryu's climactic boss fight, it comes to an end just as things
are starting to heating up.
In addition to these scenario stages, the demo includes two Team Mission
stages. These stages pair y |
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f*******r
发帖数: 5301 | 29 说说我研究的比较合理的FJ Cruiser越野升级路线：
Stage 0:
目的：裸车
代价：$25K-$29K + TTL
评论：原厂配置其实已经不错了，各种基本指标都很强大，而且2010前的offroad/
all terrain package还带A/T轮胎。当然面对大众销售的车，原厂配置还是为公路
驾驶以及油耗做了妥协，到处是塑料和薄铁皮，绝对不会配齐上百公斤的装甲。
裸车直接去越野在很多情况下属于冒险行为。
Stage 1:
目的：和裸车相比，有一定基本生存能力，可以参加一般越野活动
成本：$1500 - $1700
1. 加装侧杠(就算不越野，也可以提高侧撞安全性)
2. 加装完整的下护板(原厂的那几个小铁片就是joke，发动机，变速箱，分动箱，油箱
都需要基本的保护)
3. 升级后悬挂拉杆(原厂的太弱，容易撞烂)
Stage 2:
目的：有绞盘自救能力，不用总让别人救
成本：$1700-$2000
1. 升级前杠（为绞盘服务)
2. 加装绞盘
3. 加装电瓶（为绞盘服务)
4. 升级前悬挂弹簧，保持原厂悬挂高度(上面三件就把原厂弹簧压跨了)
Stage 3:
目的：以合理... 阅读全帖 |
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w*******o
发帖数: 6125 | 30 发信人: walstudio (午夜未眠人), 信区: Stock
标 题: Re: 科普一下吧, 看大家都Clueless一样
发信站: BBS 未名空间站 (Wed Mar 16 20:26:00 2011, 美东)
最严重的后果(当然，可能性不大)
------------------------------------------------
A Global Meltdown
For decades, the world has been running its own nuclear-style reaction, only
in the currency and debt markets, where exponentially-accelerating piles of
debt and money have spun about faster and faster in a gigantic, complex,
coordinated reaction, the core of which is, and always has been, the United
St... 阅读全帖 |
|
发帖数: 1 | 31 来自主题: _FreeSpeech版 - [无标题] Shen Yun Explained
Posted December 31, 2017 Sydney
shen yun dancer
Shen Yun program coverThe title of this post is what it is because I
willingly bought tickets for Shen Yun based entirely on assumptions that
turned out to be entirely false. Maybe you have these same assumptions. I
had seen the advertisements, posters, and TV commercials for years, and
wanted to take my kids. Shen Yun appears to be a well-crafted production
showcasing the art of Chinese dance and, because of the dancers’ po... 阅读全帖 |
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T****M
发帖数: 1913 | 32 【 以下文字转载自 Military2 讨论区 】
发信人: puppylsy (dodo), 信区: Military2
标 题: Re: 有关弹道导弹防御方面的知识普及 (转载)
发信站: BBS 未名空间站 (Fri Jan 29 02:14:27 2010, 美东)
1. The missile launches out of its silo by firing its first stage boost
motor (A). 2. About 60 seconds after launch, the 1st stage drops off and the
second stage motor (B) ignites. The missile shroud (E) is ejected. 3. About
120 seconds after launch, the third stage motor (C) ignites and separates
from the 2nd stage. 4. About 180 seconds after launch, third s |
|
l*****7
发帖数: 8463 | 33 Isreal wants to attack Iran before next summer:-) (link)
http://www.huffingtonpost.com/2012/09/27/benjamin-netanyahu-wor
UNITED NATIONS — In his most detailed plea to date for global action
against Iran's nuclear program, Israeli Prime Minister Benjamin Netanyahu
said Thursday the world has until next summer at the latest to stop Iran
before it can build a nuclear bomb.
Netanyahu flashed a diagram of a cartoon-like bomb before the U.N. General
Assembly showing the progress Iran has made, sayin... 阅读全帖 |
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N*****m
发帖数: 42603 | 34 1. Denial - The "No, not true" stage.
2. Anger/Resentment - The "Why?" stage.
3. Bargaining - The "If it's ture, what would I do" stage.
4. Depression- The "It's really happened" stage.
5. Acceptance - The "it's really true" stage.
请他们对号入座 |
|
b********n
发帖数: 38600 | 35 弗洛伊德著作
口唇期（oral stage）：从出生到 1 岁[1]左右。此期婴幼儿以吸吮、咬和吞咽等口腔
活动为主满足本能和性的需要。
肛门期（anal stage）：2－3 岁左右。此期儿童性欲望的满足主要来自于肛门或排便
过程。
性器期（phallia stage）：4－5 岁左右。此期儿童性生理的分化导致心理的分化，儿
童表现出对生殖器的极大兴趣，性需求集中于性器官本身。他们不仅通过玩弄性器官获
得满足，而且通过想象获得满足。此期男孩会经历“恋母情结”（Oedipus complx，俄
狄浦斯情结），对于女孩，则经历“恋父情结”（Electra complex，厄勒克特拉情结
）。
潜伏期（latency stage）：6岁到16岁左右。在这一时期，儿童的兴趣转向外部世界，
参加学校和团体的活动，与同伴娱乐、运动，发展同性的友谊，满足来自于外界、好奇
心和知识满足，娱乐和运动等。
生殖期（genital stage）：13岁到18岁。青春期性器官成熟后即开始，性需求从两性
关系中获得满足，有导向的选择配偶，成为较现实的和社会化的成人。 |
|
c*****r
发帖数: 8227 | 36 Pyongyang, December 13 (KCNA) -- Upon hearing the report on the enlarged
meeting of the Political Bureau of the Central Committee of the Workers'
Party of Korea, the service personnel and people throughout the country
broke into angry shouts that a stern judgment of the revolution should be
meted out to the anti-party, counter-revolutionary factional elements.
Against the backdrop of these shouts rocking the country, a special military
tribunal of the DPRK Ministry of State Security was held o... 阅读全帖 |
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T**********e
发帖数: 29576 | 37 看这个falcon heavy把三个火箭总共27发动机绑一起发射，价格709刀一磅，估计还有
的赚。Elon的目标是把原有发射成本降低10倍。
SpaceX – Breaking the $1000 per Pound Launch Cost Barrier
John Strickland explains how SpaceX can drive launch costs to less than one
tenth that of competing rocket systems:
“When people see this cost comparison, they ask all over again ‘How
can he (Musk) do that?’ How can the Falcon outperform the Delta by such a
wide margin? The three main reasons seem to be (1) low manufacturing cost (2
) low operational cost (time ef... 阅读全帖 |
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W*****d
发帖数: 4196 | 38 Dr. Susan Xiao-Ping Su
President of Tri-Valley University
Tri-Valley University TVU
E-mail: s*[email protected], s***[email protected]
EDUCATION
Ph .D. Department of Mechanical Engineering, University of California at
Berkeley, 2001.
Major: Design; Minor I: Microscale Heat Transfer; Minor II: Integrated
Circuit Technology.
Dissertation: Compliant Microleverage Mechanism Design for MEMS Application
Dissertation Advisors: Prof. Alice M. Agogino; Prof. Tsu-Jae King, Prof.
Dennise K. Lieu
M. S... 阅读全帖 |
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s****d
发帖数: 1830 | 39 我还真浪费时间差了一下wiki, 潘兴25g横向机动的数据在哪
https://en.wikipedia.org/wiki/Pershing_II_Weapon_System
Flight[edit]
Prior to launch, the missile was referenced in azimuth by its gyrocompass
inertial platform. After launch, the missile followed an inertially guided
trajectory until RV separation. Attitude and guidance commands during
powered flight (except for roll attitude) were executed via the swivel
nozzles in the two propulsion sections. Roll control was provided by two
movable air vanes on the first stage... 阅读全帖 |
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C*I
发帖数: 4736 | 40 在中国大国和大手笔的财政支援和以色列的技术帮助下，印度的弹道导弹军工从1950年
开始算起，前前后后，持之以恒续续的搞了70年，到现在为止，研发出了三大独立系列
的，全天候，陆海空，短，中，长程/洲际型全部弹道导弹系列。
Prithvi Missile Series
Prithvi Missiles are tactical surface-to-surface short-range ballistic
missiles
大地导弹系列：中短程弹道导弹。 其中，大地—III，由两级火箭推进，射程为600公
里，可携带战术核弹头。现在装备印度陆海空各军种，具体数量古详。
Name Stage(s) Range Payload
Prithvi-I (SS-150) One 150 km 1000 kg
Prithvi-II (SS-250) Two 350 km 1000 kg
Prithvi-III (SS-350) Two 600 km 500 kg
Dhanush is... 阅读全帖 |
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C*I
发帖数: 4736 | 41 在中国大手笔的财政支援和以色列的技术帮助下，印度的弹道导弹军工从1950年开始算
起，前前后后，持之以恒续续的搞了70年，到现在为止，研发出了三大独立系列，全天
候，陆海空，短，中，长程/洲际型全部弹道导弹系列。
Prithvi Missile Series
Prithvi Missiles are tactical surface-to-surface short-range ballistic
missiles
大地导弹系列
中短程弹道导弹。 其中，大地—III，由两级火箭推进，射程为600公里，可携带战术
核弹头。现在装备印度陆海空各军种，具体数量古详。
Name Stage(s) Range Payload
Prithvi-I (SS-150) One 150 km 1000 kg
Prithvi-II (SS-250) Two 350 km 1000 kg
Prithvi-III (SS-350) Two 600 km 500 kg
Dhanush is a s... 阅读全帖 |
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d*b
发帖数: 4453 | 42 常识个屁，我不光给你当老师，我给你爹当老师都绰绰有余!
在中国大国和大手笔的财政支援和以色列的技术帮助下，印度的弹道导弹军工从1950年
开始算起，前前后后，持之以恒续续的搞了70年，到现在为止，研发出了三大独立系列
的，全天候，陆海空，短，中，长程/洲际型全部弹道导弹系列。
Prithvi Missile Series
Prithvi Missiles are tactical surface-to-surface short-range ballistic
missiles
大地导弹系列：中短程弹道导弹。 其中，大地—III，由两级火箭推进，射程为600公
里，可携带战术核弹头。现在装备印度陆海空各军种，具体数量古详。
Name Stage(s) Range Payload Prithvi-I (SS-150) One
150 km 1000 kgPrithvi-II (SS-250) Two 350 km 1000 kg
Prithvi-III (SS-350) Two 600 k... 阅读全帖 |
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发帖数: 1 | 43 马斯克透露，将很快开始测试星际载人飞船系统， 推力是土星五的两倍！
Musk: Atmospheric tests of interplanetary spaceship could happen next year
March 13, 2018 Stephen Clark
Artist’s concept of the BFR spaceship deploying a satellite in orbit.
Credit: SpaceX
A team of SpaceX engineers is building a prototype of the spaceship Elon
Musk hopes will one day carry people and cargo deep into the solar system,
and it could begin low-altitude testing next year, kicking off a multi-step
test campaign before eventually going into space, the... 阅读全帖 |
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F*V
发帖数: 3978 | 44 Isreal wants to attack Iran before next summer:-) (link)
http://www.huffingtonpost.com/2012/09/27/benjamin-netanyahu-wor
UNITED NATIONS — In his most detailed plea to date for global action
against Iran's nuclear program, Israeli Prime Minister Benjamin Netanyahu
said Thursday the world has until next summer at the latest to stop Iran
before it can build a nuclear bomb.
Netanyahu flashed a diagram of a cartoon-like bomb before the U.N. General
Assembly showing the progress Iran has made, saying ... 阅读全帖 |
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T*********I
发帖数: 10729 | 45 The Classiest Debate Moment That No-One Noticed – Never Leave A Good Man
Down
Few people will talk about this, and fewer will even want to acknowledge it,
but what Donald Trump did before the debate even began shows the measure of
a real man’s worth.
Trump and Carson
At the beginning of the ABC debate, each of the candidates were being
introduced in a specific order. The first name called to the stage was
Chris Christie. The applause was loud and lingered through the time when
Martha Raddatz c... 阅读全帖 |
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T*********I
发帖数: 10729 | 46 The Classiest Debate Moment That No-One Noticed – Never Leave A Good Man
Down
Few people will talk about this, and fewer will even want to acknowledge it,
but what Donald Trump did before the debate even began shows the measure of
a real man’s worth.
Trump and Carson
At the beginning of the ABC debate, each of the candidates were being
introduced in a specific order. The first name called to the stage was
Chris Christie. The applause was loud and lingered through the time when
Martha Raddatz c... 阅读全帖 |
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H****J
发帖数: 22 | 47 请imore 给参考，是否要换新的系统了。谢谢！
症状： AC 制冷效果不好。今年夏天温度高且持久；室外 90F;空调持续开，只能将1楼
和地下室的温度维持在77F左右。 晚上将空调设置到二楼，需一个小时左右才能将温度
降到75F左右。前年ac加了近1 lb 的ferran; 去年气候不是很热，空调制冷马马虎虎。
冬天室外20F， furnace will turn on every 10 to 15 min;
公司给了一个报价 for new furnace/ac ；只问了一家报价，有以下四种选择；如果
pay check 会有6％ 折扣;
3000 尺 single house; built in 1999, in mid-west; Summer from June to
September 90F to 100F; Winter from November to April 15F to 45 F;
old system: Armstrong in 1999; with 85% efficiency; 1250 BTU;
#1 ($14072)
Modulating va... 阅读全帖 |
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s*******3
发帖数: 52 | 48 我这些日子做的research，2 stage furnace 对大房子并不是很有用。我现在的1
stage furnace 从来没觉得不舒服。不过，东西越复杂，就越容易出问题，这还是正确
的。
我的理解是：大房子，很多出气口的，1 stage 出热气的时候，不觉的风很大，吹的不
舒服，如果小屋子，大风呼呼吹，是不好受些吧。又有说，2 stage run 的时间长，那
么风被过滤的多些，这个我不是很认同，小风长时间，跟大风短时间有多大区别?不过2
stage 是提高效率的方式，似乎是这样，但是提高这样一点点，相对成本(现在的投入
和将来的维修)有必要吗? |
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qn
发帖数: 2116 | 49 您提到Option 1报价还算实在。
Option 2加650升级到two stage furnace划算吗?
中西部温差大，2000+sqft两层小房+basement.
多谢
Option #1
Lennox EL195E, Elite Series 95% efficient, 70,000 BTU natural gas，single-
stage furnace with a constant torque blower
Lennox Merit Series 13ACX-030, 30,000 BTU, single stage air conditioner
$5,319.00 - $825 rebate
Option #2
Lennox Elite Series EL296V, 96% efficient, 70,000 BTU natural gas， two-
stage furnace with variable speed blower
Lennox Merit Series 14ACX-030, 30,000 BTU, single stage air c... 阅读全帖 |
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