k********8
发帖数: 7948 | 1 CICC Says Global Banks Too Bullish on China Stocks as Pimco Buys
April 14, 2011, 1:22 PM EDT
April 15 (Bloomberg) -- China’s biggest investment bank is turning “
cautious” on the country’s stocks, just as six of its overseas rivals and
the manager of the largest mutual fund say it’s time to buy.
China International Capital Corp. predicts slowing economic and earnings
growth will limit equity gains after the Hang Seng China Enterprises Index
rose 6.2 percent this year, the best advance among majo... 阅读全帖 |
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h*********r
发帖数: 10182 | 2 MR. ANDERSON SPECIFICALLY RECALLS THAT HE USED THE LOGO GAUGE FOR THESE PRE-
GAME MEASUREMENTS (pg. 52). (This is the only recollection of Mr. Anderson
that the report rejects.)
Therefore, the Logo gauge numbers are the correct numbers to use for
halftime psi. The investigators did rely on those Logo gauge halftime psi
numbers in dealing with the Colts footballs. Using that gauge, all the Colts
footballs were within regulation. That justified the officials not adding
air to them. However, when a... 阅读全帖 |
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发帖数: 1 | 3 中国科学家吴岳良发表物理学终极理论论文，为爱因斯坦之谜打开新窗口
据中科院官方网站报道，中国科学院院士吴岳良在物理学大统一理论上实现重要突破。
报道称，吴岳良在揭秘爱因斯坦统一场论的研究中取得突破，创建了超统一场论（
hyperunified field theory）。该理论受相对论性狄拉克旋量理论、爱因斯坦广义相
对论、杨-米尔斯规范理论和大统一理论的启发，并基于吴岳良前期发展的引力量子场
论的研究成果，为揭示爱因斯坦统一场论理念中的不解之谜，探索终极统一理论打开了
一扇新窗口。
中国科学院院士吴岳良
众所周知，中国在物理学终极理论领域，同世界顶级水平还存在着较大差距，那么，吴
岳良院士的理论究竟处于什么水平？
吴岳良院士这次的研究成果是发表在《欧洲物理杂志C》上。据观察者网查询，《欧洲
物理杂志》（European Physical Journal）C刊专门刊发粒子和场论领域文章，影响因
子5.331。这意味着，除去《科学》、《自然》这样的综合期刊和《现代物理评论》《
物理报道》这种只向知名科学家约稿的期刊，《欧洲物理杂志》在物理学专业内算得上
是顶级水平。
而吴岳良本人不仅是中... 阅读全帖 |
|
g**1
发帖数: 10330 | 4 中科院院士创超统一场论 助揭爱因斯坦不解之谜
2018-01-28 09:10:38 来源: 中国科学院网站 举报
2
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（原标题：国科大在揭秘爱因斯坦统一场论的研究中取得突破）
超统一场论中超引力场的规范引力方程超统一场论中超引力场的规范引力方程
引力量子场论理论框架下给出的规范不变超统一场论作用量引力量子场论理论框架下给
出的规范不变超统一场论作用量
引力规范几何对偶性导出的广义坐标不变超统一场论作用量引力规范几何对偶性导出的
广义坐标不变超统一场论作用量
近日，中国科学院院士、中国科学院大学教授、亚太国际理论物理中心和中科院理论物
理研究所研究员吴岳良，在揭秘爱因斯坦统一场论的研究中取得突破，创建了超统一场
论（hyperunified field theory）。该理论受相对论性狄拉克旋量理论、爱因斯坦广
义相对论、杨-米尔斯规范理论和大统一理论的启发，并基于吴岳良前期发展的引力量
子场论的研究成果，为揭示爱因斯坦统一场论理念中的不解之谜，探索终极统一理论打
开了一扇新窗口。
自1915年爱因斯坦创立广义相对论以来，物理学家、数学家致力于构建一套... 阅读全帖 |
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D*******l
发帖数: 5462 | 5 大气压力101.325kPa。
If you are using a high or low pressure gauge (or both) to monitor
recharging, look at the gauge(s).
LOW pressure gauge: When the reading is between 25 and 40 psi with the A/C
running, STOP. The system is fully charged and should be cooling normally.
DO NOT add any more refrigerant. If the gauge is over 50 psi, you have
overcharged the system with too much refrigerant.
High pressure gauge: When the reading gets up around 200 to 225 psi (R12),
or225 to 250 psi (R134a), STOP. The s |
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r*****n
发帖数: 63 | 6 更换了MAF，问题依旧。
估计是fuel pump或者fuel pump pressure regulator得问题
接下来，打算借一个pressure gauge，自己测一下。
以下是测试fuel pressure步骤
From http://www.ehow.com/how_4520262_check-fuel-delivery-nissan-maxima.html
1. Relieve the pressure in the Nissan Maxima model's fuel system. Disengage
the fuel pump fuse. Start the engine and let it run until it stalls. Turn
the ignition to the off position and disconnect the negative battery cable.
2. Disconnect the fuel pressure sensor vacuum hose. Check for fuel in the
line. If ther... 阅读全帖 |
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I**F
发帖数: 114 | 7 Jumper线太细, Jump 时的电流（Crank Amps）很大。
Ford Taurus 4-缸发动机的话，Crank Amps 大约为350安培（10 Gauge Jumper线在350
安培下的烧溶时间为~10秒左右），
如果是6-缸发动机的话，Crank Amps 应该是500安培（10 Gauge Jumper线在500安培下
的烧溶时间大概为~5-6秒吧，6-7 Gauge Jumper线的话能撑住~10秒）.
建议：
（1）Jumper线越粗越好（当然也越贵），4-缸发动机的话，至少要8-Gauge的Jumper线
，6-缸发动机的话，最好用4-Gauge的Jumper线.
（2）连接好后（两车电池，正极接正极，负极接负极），不要马上 JUMP，发动新车先
给旧车电车冲冲电（~5-15 分钟），然后再 JUMP。
（3）每次 JUMP 的时间不要超过5-6 秒钟，不成功的话，稍等一会儿，让JUMP线 cool
down 一下再重来，以免烧线。 |
|
E*P
发帖数: 526 | 8 not exactly
Coil gauge: Coil gauge measures the thickness of the springs inside a
mattress: the higher the gauge, the thinner the spring. If you like a bed
that feels springy, look for a mattress with a coil gauge of between 14 and
15.5 (1.63 and 1.37 mm). If you like a firm bed, look for 12.5-gauge (1.94
mm) coils.
from overstock |
|
E*P
发帖数: 526 | 9 not exactly
Coil gauge: Coil gauge measures the thickness of the springs inside a
mattress: the higher the gauge, the thinner the spring. If you like a bed
that feels springy, look for a mattress with a coil gauge of between 14 and
15.5 (1.63 and 1.37 mm). If you like a firm bed, look for 12.5-gauge (1.94
mm) coils.
from overstock |
|
b******o
发帖数: 5644 | 10 本来就想分享一下上课的体会，谁知道大帽子满天飞。
Gauge, length (oz. shot@MV) Gun weight (lbs.) Recoil energy (ft. lbs
.)
20 gauge, 2.75" (1 at 1220) 6.5 21.0
20 gauge, 2.75" (1 1/8 at 1175) 6.5 25.0
12 gauge, 2.75" (1 at 1180) 7.5 17.3
12 gauge, 2.75" (1 1/8 at 1200) 7.5 23.0
for more information, go to the following link:
http://www.chuckhawks.com/shotgun_recoil_table.htm |
|
f*********n
发帖数: 11154 | 11 这篇里面有很多有用的信息：
http://www.gunsandammo.com/2006/10/14/shotguns-for-home-defense
If there is one handheld weapon that is more likely than others to offer a
one-shot stop of a hostile opponent, it would be “the gauge” or “12
banger” as it is known on the street.
One of the things I heard over and over from prisoners was their respect for
and fear of the shotgun. One inmate who was incarcerated for murder and
drug-trafficking charges told me “A determined man with a ‘gauge’ should
not be messed with.... 阅读全帖 |
|
p********r
发帖数: 1432 | 12 今年2月2日, 于斯大林格勒战役胜利70周年纪念日之际, 购入一只莫辛纳干M1891/30.
由于科州蛋疼的检查等待, 上周才拿到. 在这儿学习到很多相关知识.
下面是一点小小的心得,还望版上的大大门多多指教.
首先Receiver, bolt, buttplate和magazine的serial numbers全都match.
用摸心的Multi-tool检查firing pin也都正常.
还要检查闭锁间隙, 但又不想花25块钱买个小铁片.
受灰猫老大的启发, 俺就自己做了一个山寨的headspace gauge.
俺土人没打过摸心, 没有废弹壳. 就去买了A-zoom的snap caps.
先把弹底磨去一小块, 使其不受抓壳钩的影响.
当然也可以不磨弹底，直接把抓壳钩敲掉.
不过如果是在店里测试, 小二不见得允许你拿大锤去敲抓壳钩
然后在弹底贴黑色绝缘胶布.
摸心的go gauge厚度为0.066", No-Go 0.071", field 0.074".
用游标卡尺测量, 差不多刚好贴一层是go-gauge, 二层是no go-gauge, 三层是field-
gauge.
灰猫... 阅读全帖 |
|
v*********n
发帖数: 573 | 13 http://www1.bbsland.com/education/messages/240997.html
有人分析了田的工作，看来这厮是惯犯:)
yautian's comments on Tian's work are fair, but here are some more
information about these works:
The n=2 case of the KE metric of positive first Chern class was developed
from Tian's thesis by using a trick first found by Siu. Siu gave lectures at
Columbia and other occasions and Tian was in the audience. After that Tian
wrote up a
paper which became part of his thesis. Siu was very angry, and said that
Tian
had moral pr... 阅读全帖 |
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C********n
发帖数: 6682 | 14 or why gauge it
通常大家谈论物理，都有些大前提，比如经典力学的f=ma ,电动的
F_\mu\nu,量子力学里的薛定谔方程
这些东西都是猜出来的
实际上任何关于相互作用的理论都是猜出来的
那么如何猜测相互作用的形式，这是物理学的最大的基本问题
在weyl之前，大家基本是胡猜的，无论是牛顿力学还是经典电动力学
后来weyl发现，量子力学里，通过引入gauge变换不变形的要求,可以加入
最小作用原理(D_\mu->D_\mu + ieA),直接可以在量子力学里引入电磁相互
作用，于是他天才的想到，也许局域化的连续对称性是引入相互作用的好
办法
这个思想经过pauli ,klein, CN yang等人的发展，经过弱电和强作用的实验验证
被确认为是引入相互作用的有效办法
但gauge并不是唯一的引入相互作用的办法，其他的办法也很多，gauge的一个好处是
通过higgs机制，即使是有质量的 gauge field,也是可以重整化的
换句话说，从目前来看，你写出四维空间的一个可重整化的拉式量，其组合必然是一些
规范场fermi子和一些scalar boson的组合
说这么多，g |
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b******r
发帖数: 45 | 15 In QED, I can simply demand that the theory describes a massless spin-1 part
icle and deduce the U(1) gauge symmetry from it. The same logical route exis
ts for QCD, but it's mathematically too complicated so that people adopt the
reverse route: to impose the SU(3) gauge symmetry in the Lagrangian. In sho
rt, gauge symmetries are a mathematical convenience that is so convenient th
at people just build theories on it.
The term "broken gauge symmetry" appears in many places, but it's a bad and
mis... 阅读全帖 |
|
c****e
发帖数: 2097 | 16 This is the usual 'deep' view, however, it seems appropriate only perturbatively, except for the part of breaking it. it's not hard to find examples where respecting gauge symmetry more than as a redundancy gets you some headway. This is related to that there are inequivalent vacuum states related by so called singular gauge transformation. It is however not natural to distinguish them from "infinitesimal" ones especially in view of path integrals. Say you wanted to introduce things like chemica... 阅读全帖 |
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L*m
发帖数: 235 | 17 2015诺贝尔物理奖
获奖人：Arthur B McDonald、Takaaki Kajita
获奖领域：实验高能物理
获奖原因：发现了中微子震荡，并因此证明了中微子具有质量
相关文章
Measurement of the Rate of νe+d→p+p+e− Interactions Produced by B8
Solar Neutrinos at the Sudbury Neutrino Observatory
Q. R. Ahmad et al. (SNO Collaboration)
Phys. Rev. Lett. 87, 071301 – Published 25 July 2001
Direct Evidence for Neutrino Flavor Transformation from Neutral-Current
Interactions in the Sudbury Neutrino Observatory
Q. R. Ahmad et al. (SNO Collaboration)
Phys. Rev. Lett. 89, 011301 – ... 阅读全帖 |
|
发帖数: 1 | 18 【 以下文字转载自 Military 讨论区 】
发信人: tranquilan (zhutou), 信区: Military
标 题: 中国科学家吴岳良发表物理学终极理论论文，为爱因斯坦之谜打开新窗口
发信站: BBS 未名空间站 (Sat Jan 27 14:30:24 2018, 美东)
中国科学家吴岳良发表物理学终极理论论文，为爱因斯坦之谜打开新窗口
据中科院官方网站报道，中国科学院院士吴岳良在物理学大统一理论上实现重要突破。
报道称，吴岳良在揭秘爱因斯坦统一场论的研究中取得突破，创建了超统一场论（
hyperunified field theory）。该理论受相对论性狄拉克旋量理论、爱因斯坦广义相
对论、杨-米尔斯规范理论和大统一理论的启发，并基于吴岳良前期发展的引力量子场
论的研究成果，为揭示爱因斯坦统一场论理念中的不解之谜，探索终极统一理论打开了
一扇新窗口。
中国科学院院士吴岳良
众所周知，中国在物理学终极理论领域，同世界顶级水平还存在着较大差距，那么，吴
岳良院士的理论究竟处于什么水平？
吴岳良院士这次的研究成果是发表在《欧洲物理杂志C》上。据观察者网查询，《欧洲
... 阅读全帖 |
|
c**i
发帖数: 6973 | 19 Maybe. But * * *
(1)
(a) Geoff Dyer, Mongolia Makes Tracks to Escape Neighbour; The country is
building ril lines to Russia and beyond to find new markets for its
resources. Financial Times, Jan 20, 2011.
www.ft.com/cms/s/0/e81f0366
-23ed-11e0-bef0-00144feab49a.html
(i) You need to register to read this report.
(ii) Summary: Mongolia would rather take four days/4,769km--and cost three
times as much-- to transport coal to a sea port in Russia Far East than to,
say, Qinhuangdao 秦皇岛. The planned ra... 阅读全帖 |
|
d********r
发帖数: 211 | 20 2011的highlander还在自动加速啊...
http://www-odi.nhtsa.dot.gov/complaints/results.cfm?type=1&comp
Print
Complaints - Search Results
12 Record(s) Displayed.
Report Date : September 14, 2011 at 03:33 PM
Search Type : VEHICLE
Year : 2011
Make : TOYOTA
Model : HIGHLANDER
Make : TOYOTA Model : HIGHLANDER Year : 2011
Manufacturer : TOYOTA MOTOR CORPORATION
Crash : No Fire : No Number of Injuries: 0
ODI ID Number : 10424698 Number of Deaths: 0
Date of Failure: August 1, 2011
V... 阅读全帖 |
|
w******0
发帖数: 467 | 21 Used Car inspection checklist: Vehicle Exterior
Any evidence of an accident, or flood, fire or other major damage to the
body panels? Yes___ No____
Has the car been repainted or ‘touched up’? Yes___
No____
Any visible damage to the bumper? Yes___ No____
Are the doors, tailgate or hood damaged or misaligned? Yes___
No____
Any mismatched paint (a sign of possible replacement of damaged parts)? Yes
___ No_... 阅读全帖 |
|
w******0
发帖数: 467 | 22 Used Car inspection checklist: Vehicle Exterior
Any evidence of an accident, or flood, fire or other major damage to the
body panels? Yes___ No____
Has the car been repainted or ‘touched up’? Yes___
No____
Any visible damage to the bumper? Yes___ No____
Are the doors, tailgate or hood damaged or misaligned? Yes___
No____
Any mismatched paint (a sign of possible replacement of damaged parts)? Yes
___ No_... 阅读全帖 |
|
n******r
发帖数: 13312 | 23 ☆─────────────────────────────────────☆
wbing520 (wbing520) 于 (Mon Oct 29 09:55:30 2012, 美东) 提到:
Used Car inspection checklist: Vehicle Exterior
Any evidence of an accident, or flood, fire or other major damage to the
body panels? Yes___ No____
Has the car been repainted or ‘touched up’? Yes___
No____
Any visible damage to the bumper? Yes___ No____
Are the doors, tailgate or hood damaged or misaligned? Yes___
... 阅读全帖 |
|
p**********g
发帖数: 9558 | 24 小少爷，关于这个，给你一个清单(for woodworking only)吧，你自己选择买那些
AIR COMPARESSOR
23 PIN NAILER
18 GAUGE NAILER
18 GAUGE STAPLER
16 GAUGE NAILER OR 15 GAUGE NAILER |
|
c*******n
发帖数: 1214 | 25 In CT, you can buy 10 syranges without prescription in any pharmacy. Some
pharmacy may have records, some do not. So if you shop around to different
pharmacies, you can get them.
There are 1cc, half cc and 0.3 cc syrances. The needles are catagerized by
gauges and length. The larger number the gauge, the thinner the needle, the
less pain when injection, howevre, the most fragile. Some patients with
thick skin can not use large gauge syranges, for example, 31 gauge, because
the needle will bend a |
|
s*****i
发帖数: 5548 | 26 ☆─────────────────────────────────────☆
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 |
|
b*****t
发帖数: 3928 | 27 Ashaway有如下的说法
Stringing Choices
Power Control Durability
Thin gauge/Loose Tension High Low Medium
Thin gauge/Tight Tension Medium Medium Low
Thick gauge/Loose Tension Medium Medium High
Thick gauge/Tight Tension Low High Medium
力量大的人，不在乎因高磅而不能借到球拍球线的力。所以用粗线高磅。
高磅还是低磅，就如同用平板还是水碗打乒乓球。平板的方向控制要好。不过有人不同
意这个说法，认为高磅触球时间短，更不好控制。
反正拍子拿来自己打，觉得顺手就好。 |
|
b*****t
发帖数: 3928 | 28 Ashaway有如下的说法
Stringing Choices
Power Control Durability
Thin gauge/Loose Tension High Low Medium
Thin gauge/Tight Tension Medium Medium Low
Thick gauge/Loose Tension Medium Medium High
Thick gauge/Tight Tension Low High Medium
力量大的人，不在乎因高磅而不能借到球拍球线的力。所以用粗线高磅。
高磅还是低磅，就如同用平板还是水碗打乒乓球。平板的方向控制要好。不过有人不同
意这个说法，认为高磅触球时间短，更不好控制。
反正拍子拿来自己打，觉得顺手就好。 |
|
h****e
发帖数: 292 | 29 http://sports.yahoo.com/news/physicist-emailed-us-explain-exact
摘要：
“In a just world, you the media, would be apologizing or get sued for
everything you own. This was obviously done with malicious intent.
Unfortunately, one of the more unjust aspects of press freedom is that the
media is shielded from being sued by public figures. That leaves the media
free, except by their own restraint, to lie, sensationalize, and slander. ”
---------------------------------------------------------------------... 阅读全帖 |
|
f*******r
发帖数: 5301 | 30 散弹枪大概是三亿美国人里面“家防”最流行的武器，为什么呢？
散弹枪的流行是有历史原因的。在近代小口径步枪流行之前，12 GA毫无疑问是最有效
的自卫武器，射程近，威力大，容易瞄准，而且手动枪机结构简单，超级可靠。在美国
的各种电影和民间传说中，散弹枪几乎是正义暴力的代名词，就像牛仔和单动左轮枪的
关系一样。表达美国人心里散弹情节的最经典的电影是《终结者》，你可以在电影里反
复看到，邪恶机器人的手枪只是在施瓦辛格身上扑扑的扎小洞，大口径散弹每一次轰击
都把邪恶机器人打成几乎两半，施瓦辛格开着摩托飞转Winchester M1887杠杆枪机上膛
在电影里一举成名。民间传说就更神奇了："A 12 gauge will tear you in half"（
12GA能把你打成两半！）"A determined man with a gauge shall not be messed
with." （不要惹一个死硬的持有"GAUGE"的男人)。这就是为什么有一种说法，12GA上
膛的声音可以吓跑小偷。分析小偷的心理，不管是被打成两半，还是打出十八个小洞，
还是打出一个大洞，这并不重要，重要的是他... 阅读全帖 |
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k**8
发帖数: 2212 | 31 查了查，我家附近的big5新来了几款霰弹枪，明天准备去看看。
我比较中意
1、Remington870 7-Shot 12-Gauge Security Pump Shotgun
Remington 870 Express 20-Gauge Pump Shotgun（选一）
2、Mossberg 500 6-Shot 12-Gauge Adjustable Stock Pump Shotgun
Mossberg 500 8-Shot 12-Gauge Short Barrel Security Pump Shotgun（选一）
3、Ruger Gunsite Scout Bolt-Action Rifle
4、比较好玩的Auto-Ordnance M1 .30-Caliber Carbine Rifle
大虾们提提建议，哪个较好？
家防打猎用，不代替AR。
http://www.big5sportinggoods.com/product/sporting-arms/478242-1 |
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S**********s
发帖数: 4534 | 33 什么枪打得好，什么枪是首选，可以是霰弹枪， 也可以是手枪和步枪。
震耳朵是暂时的，死亡是永久的。 再说枪声也没大到能把人震晕的地步。
家防霰弹， 我建议：
1， 为了保证可靠的穿深，弹丸不要低于#1 buck。 我自己用#00.
2, 你选择用来家防的弹药， 一定要先在你的家防枪里pattern一下， 看看各种距离
散布大小并且是否均匀。
3, 选择用来家防的弹药也要先打几盒， 看看在你的枪里是否能正常cycle， 因为即
使是泵动枪也有因为抛壳钩和弹药底缘不匹配而导致无法供弹退弹的情况.
3， 12 gauge > 20 gauge， 嫌后座大就用reduced recoil ammo。 如果是瘦弱的女生
， 实在端不动枪， 再考虑更轻的20 gauge枪, 但那样的话后座反而不比12 gauge小。 |
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M*4
发帖数: 2937 | 34 Thinking of getting 1st shot gun for home defense only. Which one is more
reliable?
MOSSBERG MAVERICK 88 12-GAUGE 8-SHOT PUMP SHOTGUN $199
MOSSBERG 500 SILVER 12-GAUGE PUMP SHOTGUN COMBO $319
MOSSBERG 500 6-SHOT 12-GAUGE ADJUSTABLE STOCK PUMP SHOTGUN $439
DICKINSON ARMS 12-GA TACTICAL MARINE FINISH PUMP SHOTGUN $259
STEVENS 320 12-GAUGE PISTOL-GRIP PUMP SHOTGUN $199 |
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d**r
发帖数: 352 | 35 装备：
最重要的是许可证了：CA sport fishing license 和lobster report card。本地的潜
水店
或连锁的sport chalet 都可购买。在洛杉矶，这里有个链接供参考。
http://golosangeles.about.com/library/BLPages/BLFishLicense1.htm
今年一共是$48。如果是坐船的话，许可证应带上船。如果是在海滩的话，许可证可留
在车里，以备检
查。
除了一般的潜水装备外，还要有lobster gauge和网。
lobster gauge用于衡量龙虾是否符合捕捉标准。注意不同州有不同的标准，应购买本
州的gauge。
gauge就是这个了。还有一种是可以装在电筒上的，个人比较喜欢这种。
网一般就像下图那样的。底部是网状的，供龙虾附着在上。图的另一面有 钩子，可附
着在BC
（Buoyancy Compensator，一种马甲穿在潜水服上，控制下潜和上浮）上。
手电筒：对捕捉昼伏夜出的龙虾，好的手电筒太重要了。白天，龙虾躲在岩石缝中，晚
上才从洞中出来
觅食。
好的手电筒可以帮助猎手在更远的距离发现 |
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T*********0
发帖数: 4816 | 36 是啊，你是挺暴力的。
有个大约22岁左右的白老墨，a college student, 基本上是每一个月会让我给他
restring他的球拍，每次都是打断了的，Topspin Cyber Flash gauge 17 string，他
有大约178cm，长的挺结实的那种。也很暴力。但俺还没和他打过。
我是自己resting我自己的拍子，从来都是gauge 17 polyester string，2-3个月就换，还
从未有被俺打断的。
gauge 17的和gauge 16的，俺感觉差别挺大。 |
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b*********s
发帖数: 6757 | 37 in the past when I tried the thinner gauge, I also made it same tension or
tighter. It didn't turn out well, the feel and spin were not what was said
about thinner gauge. Not long ago, I came across some discussion where it is
said the thinner gauge should use lower tension...
Some ppl on the board argued it shouldn't be the case, using physics formula
for his argument... for me, the bottom line is same or tighter tension felt
like crap, I have not tried the lower tension, but I would definitely... 阅读全帖 |
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a*******u
发帖数: 6324 | 38 现在是忽悠时间。
1. NT1000我觉得不买的话有两个原因，一个是有后来出的NT1-A，另外一个是价格居高
不下。
而且Rode原来也是靠OEM中国话筒起家的。澳洲那个哥们原来不是做话筒的，是卖杂货
的。
2.gauge 的ECM87的官方网页明确说了是中国产麦克，然后俩美国滴录音工程师凭自己
多年滴经验和耳朵来手工挑选，选的好的就说是gauge，选不好退回去的就是Nady。
（来源：http://recordinghacks.com/microphones/Gauge）
官方网页介绍：
～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～～
～～～～～～
http://www.gauge-usa.com/
ABOUT US
MADE IN CHINA • TESTED IN CALIFORNIA
Most other companies try to conceal the fact that they import their
microphones from China. Not us.
We import from China and we... 阅读全帖 |
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z*****z
发帖数: 2438 | 39 这个我们现在就再用，是人工的，我要找的是自动机能用的，air gauge probe本来可
以，但要测的两个东西，孔径中值差一点，但就是这一点，超过了air gauge的量程。
（Air gauge是非接触式的，量程很有限）我们不想在换产品的时候换air gauge probe
,所以想找一种范围稍微大一些的。 |
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b******r
发帖数: 45 | 40 Of course gauge symmetry can be unbroken. But that's not my point. My point
is that you can't explicit break it without introducing new degrees of freed
om. For the case of un-gauged symmetries, you can do that by simply tuning s
ome charges off.
In QED, I can just work in the Coulomb gauge and forget about the U(1) gauge
symmetry. The U(1) symmetry is introduced only for mathematical convenience
. |
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q*d
发帖数: 22178 | 41 QED里的电磁场是先发现Maxwell方程,才发现电磁场的gauge symmetry.
但就下面一步来说,从要求gauge symmetry到导出SU(2)和SU(3)
规范场的时候,gauge symmetry不仅仅是规范场的对称,
而是整个理论的,SU(2)和SU(3)的规范场本身就是要求规范对称导出的
point
freed
s
gauge
convenience |
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f*******d
发帖数: 339 | 42
Even then, there are gauge choices inside GR (heard about synchronous gauge,
conformal gauge, etc.?). Furthermore, what is gauge field? Isn't it some
connections on fibre bundles, according to Yang's new understanding? In that
sense, even the Yang-Mills field is geometry.
theory? According to Yang's more recent view, it is |
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n*****4
发帖数: 228 | 44 【 以下文字转载自 Stock 讨论区 】
发信人: ElliottJr (Froglet), 信区: Stock
标 题: Trading Week Outlook: June 7-11
发信站: BBS 未名空间站 (Mon Jun 7 01:25:17 2010, 美东)
With the U.S. Retail Sales and Consumer Sentiment data scheduled for release
in the week ahead along with three interest rate announcements from the
Reserve Bank of New Zealand, the Bank of England and the European Central
Bank, traders will look for signs of future changes in the monetary policies
of these three central banks, while also focusing on consu... 阅读全帖 |
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p******u
发帖数: 14642 | 45 Rail links with adjacent countries
* Andorra Andorra - no rail system in Andorra
* France France - yes - break-of-gauge 1,668 mm (5 ft 5 2⁄3 in)/1,
435 mm (4 ft 8 1⁄2 in) (new high-speed lines will link without any
break-of-gauge)
* Portugal Portugal - yes - same gauge
* Gibraltar Gibraltar - no extant rail system in Gibraltar
* Morocco Morocco - no - proposed undersea tunnel |
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c**i
发帖数: 6973 | 46 (1) HDS Greenway, The New War Horse; Pickup trucks have changed Third World
combat. Boston Globe, Apr 5, 2011.
http://www.boston.com/bostonglobe/editorial_opinion
/oped/articles/2011/04/05/the_new_war_horse/
Quote:
"Glance at any newspaper, or switch on the nightly news, and you are likely
to see Japanese pickup trucks carrying rebels into, or away from, battle in
Libya or the Ivory Coast, often with a large machine gun in the cargo bed")
"The trucks are the modern equivalent of the light cavalr... 阅读全帖 |
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b***y
发帖数: 14281 | 47 That's why I said they (perhaps you included) had no idea about what they
talked about.
The real electron in the standard model is definitely Weyl fermion. There's
no question about that at all. Nor is Weyl fermions anything mysterious. It
is only that both left handed and right handed weyl electrons exist, which
can pair up and form a Dirac pair, and hence give electron a mass term.
However, ever since the famous discovery of Yang and Lee, it is well known
that the electro-weak sector violates ... 阅读全帖 |
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e*******n
发帖数: 4912 | 48 高能物理的绝唱
作者是王孟源，哈佛高能物理博士
现代高能物理始於1940年代的量子场论（Quantum Field Theory），最初的应用是以
量子电动力学（Quantum Electro-Dynamics，QED）来解释电磁力。
在1950年代，加速器的技术突飞猛进，数以百计的高能粒子被发现；物理学家在整理
这些粒子的时候，注意到各种对称性（Symmetry），其中最深奥困难也最重要的是规范
对称性（Gauge Symmetry）。其实QED本身就是一个规范场论，但是它只是规范场论中
最简单的一种，叫可交换规范场论（Abelian Gauge Theory）。
1954年，杨振宁和他的学生Robert Mills解决了非交换规范场论（Non-Abelian
Gauge Theory）的难题，高能物理理论界随即注意到用非交换规范场论来解释弱作用力
和强作用力（宇宙中只有四种作用力：电磁力、弱作用力、强作用力和重力）的可能，
但是具体的细节还不清楚。
1961年，当时在哈佛大学物理系的Sheldon Glashow领悟到电磁力和弱作用力如何混
... 阅读全帖 |
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发帖数: 1 | 49 从LHC的结果来看。
即使SSC没取消也不过是让大家早点看清惨淡的现实而已。
物理学的惨淡不是由谁而是由现实决定的：
宇宙的高能区域存在一个巨大的gauge desert。
这个gauge desert可能被穿越的概率越来越小。
人类的出现和目前为止能掌控的资源取决于精细结构常数和QCD能标的巧合，
如果类似的巧合没有在下一个能标的新物理出现。
宇宙智慧生命将几乎被永远锁定在QCD能级。
如果下一个一百年gauge desert被完全确定的话，人类将注定不会找到实现星际穿越的
能源，星空不再是人类的梦想。所有人都可以进入matrix玩了。 |
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l****z
发帖数: 29846 | 50 by Richard Johnson
02/08/2011
If you want to know what is hot in the gun industry you have to get to the
annual Shooting, Hunting, and Outdoors Trade (SHOT) Show held every January.
Manufacturers, retailers and even we members of the press all descend on
Las Vegas to see what products will dominate the market in the coming year.
Earlier this month, the 2011 SHOT Show gave us a pretty clear view of what
cool new guns to expect this year. Here is a sample of just a few of the
great new guns co... 阅读全帖 |
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