a**d
发帖数: 85 | 1 http://www.geeksforgeeks.org/diameter-of-a-binary-tree/
看到这个题。
我觉得可以就用一个class instance variable去记录max就好了：
int max=0;
public int diameter(Tree root) {
if(root==null) return 0;
int l=diameter(root.left);
int r=diameter(root.right);
max=Math.max(max,l+r+1);
return l>r:l+1:r+1;
}
感觉这样没错吧。谢了 |
|
i********g
发帖数: 41 | 2 【 以下文字转载自 Computation 讨论区 】
发信人: iamyaoming (我叫姚明), 信区: Computation
标 题: 请问matlab能不能算一个graph的diameter?
发信站: BBS 未名空间站 (Mon Sep 24 10:44:35 2007)
我的graph非常大，有400K+的nodes，1.4M+的edge。请问matlab有没有什么function，
或者哪儿能下到什么package能够算出它的diameter? |
|
n***w
发帖数: 2405 | 3 【 以下文字转载自 Neuroscience 讨论区 】
发信人: ntgxw (andy), 信区: Neuroscience
标 题: 求助：How to measure blood vessel diameter?
发信站: BBS 未名空间站 (Fri Dec 30 23:16:59 2011, 美东)
最近有这个需要，手头没有什么特殊的软件，用了imagesJ的一个plug-in尝试了一下，
但是貌似不对。我觉得我的方法错了。板上有人u有些什么建议吗？谢谢。 |
|
i********g
发帖数: 41 | 4 我的graph非常大，有400K+的nodes，1.4M+的edge。请问matlab有没有什么function，
或者哪儿能下到什么package能够算出它的diameter? |
|
w*******y
发帖数: 60932 | 5 Meritline
0.75" Diameter Color-Changing Mood Ring
$1.43 - $0.94 code MLCK400706062366AL1
= $0.49 with free shipping
|
|
|
i*****f
发帖数: 578 | 7 class Planet:
@property
def diameter(self):
# a getter
return self.__diameter
@diameter.setter
def diameter(self, diameter):
# a setter
if diameter<0:
raise ValueError("impossible")
self.__diameter = diameter
def __init__(self, diameter):
self.diameter = diameter
mars = Planet(100)
print mars.diameter
mars.diameter = -10 # ValueError |
|
C*******r
发帖数: 10345 | 8 223：
Bullet diameter .224 in (5.7 mm)
Neck diameter .253 in (6.4 mm)
Shoulder diameter .354 in (9.0 mm)
Base diameter .376 in (9.6 mm)
Rim diameter .378 in (9.6 mm)
Rim thickness .045 in (1.1 mm)
5.56：
Bullet diameter 5.70 mm (0.224 in)
Neck diameter 6.43 mm (0.253 in)
Shoulder diameter 9.00 mm (0.354 in)
Base diameter 9.58 mm (0.377 in)
Rim diameter 9.60 mm (0.378 in)
Rim thickness 1.14 mm (0.045 in)
完全一样。这个5.56，223只是名字。弹药名字历来和弹径不完全一致，比如7.5x55，
说是7.5其实是7.6。6.... 阅读全帖 |
|
|
W***n
发帖数: 11530 | 10 The Real Cost of Your Car’s Cheap Factory Air Filter
by Timothy Zahl on December 03, 2015
Air Filters Selection
In today's world, saving money wherever possible has become essential. But
it's important not to lose sight of the fact that, sometimes, a product that
costs more up front will save you more money over time. In our business, we
've seen far too many consumers judge products solely on the basis of their
initial cost, completely neglecting any long-term economy and benefits. When
it come... 阅读全帖 |
|
K*****k
发帖数: 430 | 11 定义直径为连通两节点最多的边数
空树和单节点树的直径都是0
直径有可能通过根节点，也可能通过某棵子树的根节点但不通过根节点。
利用经典的求二叉树高度的递归函数，同时保持直径的最大值，就可以了么？
// The initial value of diameter is set to 0
int Depth(Node* root, int& diameter)
{
if (root == NULL)
return 0;
int LDepth = Depth(root->left, diameter);
int RDepth = Depth(root->right, diameter);
if (LDepth + RDepth > diameter)
diameter = LDepth + RDepth;
return max(LDepth + 1, RDepth + 1);
} |
|
w**w
发帖数: 5391 | 12 http://aggie-horticulture.tamu.edu/archives/parsons/fallgarden/
After gardeners have worked SO hard and SO long to grow fresh, could-be-
delicious produce, many are often robbed of their potential goodness because
of improper, ill-timed harvesting. To avoid the occurrence of that
unfortunate situation again, we have listed a number of the most popular
garden vegetables and the harvest procedure for each.
BEANS, SNAP - Harvest before maturity when pods are not completely full for
maximum tenderne... 阅读全帖 |
|
f**d
发帖数: 768 | 13 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 |
|
R*****s
发帖数: 41236 | 14 一般是700c, 我其实也不知道多大，wiki了一下，似乎直径是一样大的：
http://en.wikipedia.org/wiki/Bicycle_wheel#700C_Road_bicycle_wh
29 inch wheels/ISO 622
Main article: 29er (bicycle)
“29-inch wheels”, which also conform to the popular 700C (622 mm diameter
clincher wheel standard) are becoming more popular for not only cyclocross
bikes but also cross-country mountain bikes for larger riders. Their rim
diameter of 622 mm (~24.5 inch) is identical to most road, hybrid and
touring bicycle wheels but are typically reinforced fo... 阅读全帖 |
|
w*******y
发帖数: 60932 | 15 Use promo code = EMCZNNT75 to take off $50
You can't go wrong with Polk Audio Pricey but you get what you pay for. I
only use Yamaha, Polk Audio and Infinity, and many of my guests are always
impressed. I have a set a Polk Audio's in my garage and when we have be
projector going watching the game I get mad kudo's, I have half the
neighborhood bringing beer and steaks which is okay by me.
Model
Brand
Polk Audio
Model
RM75
Spec
Type
Home Theater Speaker System
Sold As
System
Speakers Configurat... 阅读全帖 |
|
h******d
发帖数: 4761 | 16 9 mm Stopping Power, all bullet weights
Brand Bullet Shootings One Shot Stops Percent Diameter
Penetration Notes
Federal 124 gr HS 243 202 83% 0.67" 14.5"
Federal 124 gr Nyclad 265 220 83% 0.69" 14.3"
Winchester 115 gr ST 421 349 83% 0.64" 13.7"
Remington 115 gr JHP 265 217 82% 0.58" 14.3"
Federal 115 gr JHP 382 317 82% 0.56" 13.6"
Federal 124 gr Nyclad 44 3... 阅读全帖 |
|
e***s
发帖数: 1397 | 17 Summary: Best choice is 12GA pump shotgun, loaded with #1 buckshot.
http://www.firearmstactical.com/briefs10.htm
Shotgun Home Defense Ammunition
(Tactical Briefs #10, October 1998)
For home defense, a shotgun is superior to a handgun in terms of being able
to stop a violent intruder as quickly as possible. A reliable, well-made,
pump-action shotgun can usually be purchased for less than the cost of a
handgun of comparable quality. Also, inexpensive birdshot ammunition,
typically used for trainin... 阅读全帖 |
|
b******o
发帖数: 5644 | 18 50 BMG:
Case type Rimless, bottleneck
Bullet diameter .510 in (12.95 mm)
Neck diameter .560 in (14.2 mm)
Shoulder diameter .714 in (18.1 mm)
Base diameter .804 in (20.4 mm)
Rim diameter .804 in (20.4 mm)
Rim thickness .083 in (2.1 mm)
Case length 3.91 in (99 mm)
Overall length 5.45 in (138 mm) *********这个应该是没错的。
.9mm 是比较粗的自动铅笔芯。 |
|
c*******y
发帖数: 60 | 19 今年底毕业，将发2个paper。 目前研究偏生物，与biofiltration有关。简历已经投了
n多了，只有两个回应，其中一个还是个process engineer， 跟环境不沾边（电面没什
么问题，但他们最后还是要了一个跟他们目前一个客户以前合作过的人）。大公司职位
看到很多，很多也是entry level的，我也是基本每周都投，大小公司都有，但都是石
沉大海。
个人觉得，经验少于一年，硕士，无人推荐，找工作完全就是碰运气。老板多年不跟工
业界联系了，帮不了什么忙。有个同学，硕士，不是环境的，找的是系里其他老师的推
荐，马上就拿到了good year的offer。
本人还是想进工业界，因为不太愿意走学术。贴下本人主要经历，请教环境方面的前辈
：我的简历还有哪些需要改进的地方？ 目前求职方向有哪些需要注意的？
硕士gpa3.9，国内本科给水排水工程，gpa3.5左右。
Environmental Engineer
An entry-level Environmental Engineer with excellent understanding in water/
wastewa... 阅读全帖 |
|
c*******y
发帖数: 60 | 20 今年底毕业，将发2个paper。 目前研究偏生物，与biofiltration有关。简历已经投了
n多了，只有两个回应，其中一个还是个process engineer， 跟环境不沾边（电面没什
么问题，但他们最后还是要了一个跟他们目前一个客户以前合作过的人）。大公司职位
看到很多，很多也是entry level的，我也是基本每周都投，大小公司都有，但都是石
沉大海。
个人觉得，经验少于一年，硕士，无人推荐，找工作完全就是碰运气。老板多年不跟工
业界联系了，帮不了什么忙。有个同学，硕士，不是环境的，找的是系里其他老师的推
荐，马上就拿到了good year的offer。
本人还是想进工业界，因为不太愿意走学术。贴下本人主要经历，请教环境方面的前辈
：我的简历还有哪些需要改进的地方？ 目前求职方向有哪些需要注意的？
硕士gpa3.9，国内本科给水排水工程，gpa3.5左右。
Environmental Engineer
An entry-level Environmental Engineer with excellent understanding in water/
wastewa... 阅读全帖 |
|
w*****3
发帖数: 2301 | 21 What is PM, and how does it get into the air?Size comparisons for PM
particles
Size comparisons for PM particles
PM stands for particulate matter (also called particle pollution): the term
for a mixture of solid particles and liquid droplets found in the air. Some
particles, such as dust, dirt, soot, or smoke, are large or dark enough to
be seen with the naked eye. Others are so small they can only be detected
using an electron microscope.
Particle pollution includes:
PM10 : inhalable particles,... 阅读全帖 |
|
i****o
发帖数: 30 | 22 大家圣诞节快乐！我的宝宝11/1/2015出生。他一出生医生发现他哭得费劲，马上住进
NICU，医生很快发现他心脏有问题：肺动脉狭窄。
第一次心脏echo结果11/2/2015 3:02:10 AM
PULMONARY VALVE:
The pulmonary valve is thickened and is doming. There is critically severe
pulmonary valve stenosis. The maximum velocity across the pulmonic valve is
3.89 m/s and the peak instantaneous gradient is 60.6 mmHg. The mean gradient
across the pulmonic valve is 36.9 mmHg. There is trivial pulmonary valve
regurgitation.
然后马上... 阅读全帖 |
|
i****o
发帖数: 30 | 23 【 以下文字转载自 Medicine 讨论区 】
发信人: iaiayo (iaiayo), 信区: Medicine
标 题: 新生儿肺动脉瓣膜狭窄求助 pulmonary valve stenosis
发信站: BBS 未名空间站 (Fri Dec 25 21:01:51 2015, 美东)
大家圣诞节快乐！我的宝宝11/1/2015出生。他一出生医生发现他哭得费劲，马上住进
NICU，医生很快发现他心脏有问题：肺动脉狭窄。
第一次心脏echo结果11/2/2015 3:02:10 AM
PULMONARY VALVE:
The pulmonary valve is thickened and is doming. There is critically severe
pulmonary valve stenosis. The maximum velocity across the pulmonic valve is
3.89 m/s and the pe... 阅读全帖 |
|
h*********2
发帖数: 2508 | 24 有点长，但是挺好玩
After some years now of reading internet bulletin boards, I think I’ve got
the pros and cons of possible SHTF rifle choices figured out. Correct me if
I’m wrong, but the following is my analysis based upon the wisdom of
numerous gun board gurus (you know them, they’re always the first ones to
tell you a particular model gun is “junk” and enlighten you as to why they
have made the only logical purchases)…
The AR 15:
Great, awesome, unbelievable rifle(when it works). Can hit a fly in the... 阅读全帖 |
|
a***a
发帖数: 8941 | 25 You cannot just look at the bullet diameter
bullet diameter is usually larger than bore diameter
.270 is 6.8mm, so 6.8SPC actually belongs to 270 familiy
7mm family (7mm-08, 7mm Rem Mag, .280Remington) has larger bullet diameter
than .270 |
|
k*******n
发帖数: 5546 | 26 我维基了一下，MK12 SPR 18寸用的确实是douglas的blank.
Navy Seals Recon 的16寸不锈钢关用的是 Lilja blank, chambered by Compass
Lake. 喜欢看电影的弟兄们可以克隆一根。
According to Wes Grant of M.S.T.N. a premiere small arms builder, these
weapons were initially built in-house with the only specifications being the
ability to shoot any 5.56 x 45 mm cartridge in inventory (at the time this
included the first iterations of the 77-grain (5 g) Mk 262 Mod 0 cartridge),
and that the weapon have a barrel 16 inches (406 mm) in length.
The barre... 阅读全帖 |
|
f********4
发帖数: 955 | 27 http://www.natchezss.com/product.cfm?contentID=productDetail&br
shotgun slug打鹿绝配。
Magnification: 1.65-5x
Objective Diameter: 36mm
Exit Pupil: 7.2mm
Field of View: 15.1 - 45.3 ft @ 100 yds
Eye Relief: 5 in
Tube Diameter: 1 in
Objective Outside Diameter: 45mm
Eyepiece Outside Diameter: 42mm
Weight: 13.58 oz
Overall Length: 11.14 in
Adjustment Graduation: 1/4 in
Max Internal Adjustment: 100 MOA
Parallax Setting: 100 yds
Waterproof & Fogproof
Finish: Matte
Reticle: NikoPlex |
|
b****r
发帖数: 17995 | 28 版大这次活动简直为以轻小为特色的我丐量身定做，不得不积极参加，拿出我家宝贝的
小贱队来晒一下
机身为K-r，带电池后598g，Size (W x H x D)125 x 97 x 68 mm
镜头从左至右分别是
21mm lmt， 140g， Filter Diameter 49mm
50mm FA F/1.4， 220g，Filter Diameter 49mm
55mm Hanimar F/1.7，~220g，filter Diameter 49mm
18-55mm DA F/3.5-5.6，225g，filter Diameter 52mm
10-17mm DA F/3.5-4.5 Fish-Eye，320g，no filter ring（手工测量约56mm） |
|
y*b
发帖数: 3190 | 29 zz from nikon rumors:
"A quick update on my last post about the rumored new full-frame mirrorless
Z-mount from Nikon: the measurements I reported caused some confusion in the
comments section - my understanding is that the external diameter of 49mm
is the actual mount opening, the entire external diameter of the mount is
going to be 65.4mm (just received this update):
Mount diameter (opening): 49mm
Total diameter of mount: 65.4mm
Flange focal distance: 16mm
The top graph by Eric Calabros shows a... 阅读全帖 |
|
w*******y
发帖数: 60932 | 30 Amazon has the Fenix TK45 High Performance Flashlight for $109 + FSSS (and 5
% cashback if you have Chase Freedom). Cheapest it has ever been at Amazon
according to camelcamelcamel.
Link: Link:
http://www.amazon.com/Fenix-TK45-High-Performance-Flashlight/dp
Powerful digitally regulated, three-LED flashlight with four steady lighting
modes and multiple flashing settings
760-lumen output on turbo down to eight-lumen output on low; 200-meter beam;
runtimes from two to 232 hours
Constructed of air... 阅读全帖 |
|
w*********r
发帖数: 42116 | 31 传热学定律推算出critical diameter of thermal insulation。
要保暖，必须保证insulation层厚度大于critical diameter。
如果不到critical diameter，随着厚度的增加，heat loss增大。
先把传热定律搞明白再哈哈。 |
|
c**i
发帖数: 6973 | 32 Andrew E Kramer, Aloft, a Russian Image Problem. New York Times, Aug 30,
2011.
http://www.nytimes.com/2011/08/30/business/global
/russia-hits-headwinds-in-selling-airliners-to-the-west.html?_r=1&scp=1&sq=
superjet&st=cse
Note:
(a) Aeroflot
http://en.wikipedia.org/wiki/Aeroflot
(Aeroflot, English translation: "air fleet"; the flag carrier and largest
airline of the Russian Federation; Founded 1923; Headquarters Moscow; The
airline is owned (as of March 2007) by the Russian Government)
(b) The a... 阅读全帖 |
|
z****z
发帖数: 2054 | 33 你真是张嘴就来啊.
M6X1 6H 内螺纹, ANSI/ASME B1.13M-1983(R1995):
Minor diameter: 4.917 mm - 5.153 mm
Pitch diameter: 5.350 mm - 5.500 mm
Major diameter: 6.000 mm - 6.294 mm |
|
发帖数: 1 | 34 THE RECONSTRUCTION OF HANKOW
China's Commercial And Industrial Capital.
From The Far Eastern Review.
Ever since the fateful fire which destroyed the Chinese city of Hankow
during the Revolution of 1911-12 it has been generally known that the
Chinese Government has been desirous of rebuilding the city upon modern
lines and making other improvements in the vicinity compatible with the
importance of such a flourishing commercial and industrial center. It was,
therefore, not surprising when it ... 阅读全帖 |
|
发帖数: 1 | 35 THE RECONSTRUCTION OF HANKOW
China's Commercial And Industrial Capital.
From The Far Eastern Review.
Ever since the fateful fire which destroyed the Chinese city of Hankow
during the Revolution of 1911-12 it has been generally known that the
Chinese Government has been desirous of rebuilding the city upon modern
lines and making other improvements in the vicinity compatible with the
importance of such a flourishing commercial and industrial center. It was,
therefore, not surprising when it ... 阅读全帖 |
|
i******t
发帖数: 22541 | 36 31,890
这个最后多钱能拿下啊？
有什么比较实用的 配置推荐吗》？
MODEL
GRAND CHEROKEE LAREDO 4X4
$29,695
COLORS
Black Interior Color $0
Black Forest Green Pearl Coat Exterior Paint $0
$0
OPTIONS
Uconnect® 130 AM/FM/CD/MP3 $0
Cloth Low-Back Bucket Seats $0
17-Inch X 8.0-Inch Aluminum Wheels $0
P245/70R17 BSW On/Off-Road Tires $0
Normal Duty Suspension $0
3.6-Liter V6 24-Valve VVT Engine $0
5-Speed Automatic Transmission $0
GVW Rating - 6,500 Pounds $0
3.09 Rear Axle Ratio $0
Monotone Paint $0
Laredo E Group $1,700
$1,70... 阅读全帖 |
|
|
a*******y
发帖数: 1040 | 38 int diameter(node * root,int *height)
{
if (root == null)
{
*height = 0;
return 0;
}
int lh=0;
int rh = 0;
int ldiameter = 0;
int rdiameter = 0;
ldiameter = diameter(root->left, &lh);
rdiameter = diameter(root->right, &rh);
*height = 1+ max(lh,rh);
return max(1+rh+lh,max(ldiameter,rdiameter); |
|
h***z
发帖数: 5043 | 39 Diameter of your Range Hood Ductwork is the most important factor
The diameter of your Ductwork is the single most important consideration.
Here are some guidelines based on your Range Hood or Vent Hood CFM. Now
please note that we will use the most commonly available sizes of Ductwork
for our recommendations and that in many remodel applications for older
homes there is an existing 4” Duct which in some cases is the only option
other than a recirculating hood. We always recommend venting outsid... 阅读全帖 |
|
d*****3
发帖数: 65 | 40 请教版上医生。去年查出胆囊息肉，现在多了肝血管瘤。情况会不会严重？需要注意什
么？非常感谢！
There is no evidence of cholecystolithiasis. A small echogenic nodular focus
is again seen associated with the anterior fundal wall the gallbladder
measuring 0.8 x 0.4 centimeters in diameter. On Doppler evaluation again
demonstrates some associated vascularity. This is consistent with a stable
polyp. The common duct measures 2 mm in AP diameter. There is no evidence of
dilated intrahepatic biliary radicles. A homogeneous liver parenchyma
pattern is... 阅读全帖 |
|
|
G***G
发帖数: 16778 | 42 in some states, crayfish fishing is not legal.
in most states where crayfish fishing is allowed,
there is a regualtion for the opening diameter for the trap.
the trap's opening diameter should be no more than 1 inch,
which mean you can only catch very samll crayfish.
Most of trap on sale online has more than 2 inch diameter opeing,
like the one Novi used. |
|
m**o
发帖数: 9137 | 43 上次去钓皮皮,不小心把螺旋桨叶片打残了，虽然也能开，但是感觉震动偏大，所以决
定换掉。
查到不同的Pitch 和 diameter。
怎么选择呢?
是不是diameter越大，速度越快？还是diameter越小，开的越快？
还有PITCH
多大的合适？
我的马达是MARINE 40HP 1988年。
谢谢指教。 |
|
f*********n
发帖数: 11154 | 44 http://www.midwayusa.com/viewProduct/?productNumber=746570
Simmons Whitetail Classic Rifle Scope 6.5-20x 50mm.
Whitetail Classic Rifle Scope Features:
1/4 MOA windage and elevation adjustments
Fully multi-coated camera-quality lenses
Waterproof, fogproof, shockproof
Limited lifetime factory warranty
Technical Information
Tube Diameter: 1"
Objective (front) Diameter: 63.5mm (2.50")
Ocular (rear) Diameter: 41.9mm (1.65")
Adjustable Objective: Yes
Adjustment Click Value: 1/4 minute of angle
Eye Rel... 阅读全帖 |
|
f*********n
发帖数: 11154 | 45 http://www.midwayusa.com/viewproduct/?productnumber=168462
Whitetail Classic Rifle Scope Features:
1/4 MOA windage and elevation adjustments
Fully multi-coated camera-quality lenses
Waterproof, fogproof, shockproof
Limited lifetime factory warranty
Technical Information
Tube Diameter: 1"
Objective (front) Diameter: 63.5mm (2.50")
Ocular (rear) Diameter: 41.9mm (1.65")
Adjustable Objective: Yes
Adjustment Click Value: 1/4 minute of angle
Eye Relief: 2.8 to 3.7 inches
Field of View at 100 yards:
1... 阅读全帖 |
|
l***a
发帖数: 2677 | 46 这个upper口碑如何？好像就是24" varminter的upper缩短成20"枪管
1:8，20" Fluted Extra Heavy 1" diameter Barrel。跟我现在的1:7 twist, 16″
Govt Profile 0.75" diameter barrel比打远程会有很大提高吗？
http://www.bushmaster.com/products.asp?cat=6
20" Predator Upper Receiver/Barrel Assembly
Adapted from our very accurate and successful 24" Varminter, the Predator
Upper Receiver/Barrel Assembly's 20" Fluted Extra Heavy Barrel is button
rifled 1 x 8" to stabilize the heavier 69-77 grain bullets that a predator
hunter/caller would choose for b... 阅读全帖 |
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h******d
发帖数: 4761 | 47 http://www.handloads.com/misc/stoppingpower.asp?Caliber=2&Weigh
22 Long Rifle Stopping Power, all bullet weights
Brand Bullet Shootings One Shot Stops Percent Diameter
Penetration Notes
Quik Shok HP 10 4 40% 0" 6.7"
CCI Stinger HP 465 178 38% 0.28" 7.3"
Winchester HP 654 196 30% 0.29" 9.6"
Federal HP 722 214 30% 0.26" 8.8"
Remington HP 988 296 29% 0.25" 9.1"
Winchest... 阅读全帖 |
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x*7
发帖数: 11281 | 48 just FYI
Exit Pupil:
An exit pupil is the small circle (column) of light that is visible in
the ocular lens when you hold your scope (or binocular) at arm's length. The
larger the exit pupil is, the brighter the image that will be entering your
eye. To find the exit pupil for your scope, divide the objective lens
diameter in millimeters by the magnification. For example, if your scope is
four power (4X), and your objective lens is thirty-six millimeters in
diameter (36mm), divide 4 into 36 a... 阅读全帖 |
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k*****G
发帖数: 697 | 49 同意猫大，应该是.380 ACP。换了.38 special放不进9mm mag里.
.380ACP和 9mm的bullet diameter都是9mm(其实9mm的Bullet diameter是9.01mm, 多了
0.01mm)。
FTE因为.380ACP弹短，9mm的抛弹钩抓不到。.380ACP base diameter比9mm小，9mm
chamber包不紧，鼓胀严重。离事故不远了，害pia... |
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o*******g
发帖数: 1300 | 50 This is funny:
"The law was very specific. They said it had to be a certain diameter and it
had to be 5 ounces," Mint Director Moy stated at a public coin forum. Well,
there isn't a 5 ounce blank out there, so we had to get this custom made.
Then, because it was 3 inches in diameter, well we've got a 5 ounce piece of
silver and we stretch it out to a 3 inch diameter, it's paper thin."
5 ounce size should be 5*31.1/10.5 = 14.8 ml
thinkness = 14.8/(3.14*2.54*1.5*2.54*1.5) = 0.32 cm
O, my, the law |
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