埃德蒙顿华人社区-Edmonton China

 找回密码
 注册
查看: 3057|回复: 0

Homework 54 this

 关闭 [复制链接]
鲜花(1) 鸡蛋(0)
发表于 2008-10-22 14:14 | 显示全部楼层 |阅读模式
老杨团队,追求完美;客户至上,服务到位!
Nuclear weapons:/ V& c( W" ]- j, G
http://nuclearweaponarchive.org/Nwfaq/Nfaq0.html
& e( q: V* o. z( D2 M4 F! u0 F
9 ?0 q6 N) y( VWeapons of Mass Destruction. (2003). In Harvey Kushner (Ed.), Encyclopedia of Terrorism, Vol. 1. (404-406). Thousand Oaks: Sage Reference. Retrieved October 22, 2008,  from Gale Virtual Reference Library via Gale: ' k' I- e! [9 S& z
<http://find.galegroup.com/gvrl/i ... 925&version=1.0>
8 v" v4 T4 o, Y" p: w8 c/ ]+ |( K0 f

/ c3 r9 Q; _9 T. z2 k0 k2 h% n% fNuclear Weapons. (2006). Encyclopedia of Modern Europe: Europe Since 1914: Encyclopedia of the Age of War and Reconstruction, Vol. 4. (1891-1898). Retrieved October 22, 2008,  from Gale Virtual Reference Library via Gale: : I. I" f3 R# ]: J; {. v
<http://find.galegroup.com/gvrl/i ... 925&version=1.0>7 _5 h% V7 g1 \( z

/ H9 D! U* q8 f; b6 l8 C( B
; L; A. N& O9 B; J1 D% b, Z. K/ fClark, Roger. (2005). Nuclear Weapons. In Dinah Shelton (Ed.), Encyclopedia of Genocide and Crimes Against Humanity, Vol. 2. (754-761). Detroit: Macmillan Reference USA. Retrieved October 22, 2008,  from Gale Virtual Reference Library via Gale: " `# {- }1 |" k; ]& L- k8 i
<http://find.galegroup.com/gvrl/i ... 925&version=1.0>
/ {/ Y: S- ?& j) X, g, h) ~: ^9 _; }& \

$ t( c3 J  ?2 ~& k; A
: i, L5 L* {  D. c9 }) W) OLerner, K. Lee, Gilman, Larry, & Haycock, Dean Allen. (2004). Nuclear Weapons. In K. Lee Lerner & Brenda Lerner (Eds.), Gale Encyclopedia of Science, Vol. 4. (3rd ed., 2816-2821). Detroit: Gale. Retrieved October 22, 2008,  from Gale Virtual Reference Library via Gale: % G9 _/ v: m; k. d" i
<http://find.galegroup.com/gvrl/i ... 925&version=1.0>3 v7 H! p( F( c5 {) c$ |

5 V1 t( }9 z2 f) {  d4 `! dcritical mass. X. I3 H4 k4 Y
n., S# L8 v5 ?6 r6 e3 v: h
1. The smallest mass of a fissionable material that will sustain a nuclear chain reaction at a constant level.
4 P% K+ w1 J- m' ?2. The amount of matter needed to generate sufficient gravitational force to halt the current expansion of the universe. e* V; b# h% N$ G3 e2 S% t
<http://www.thefreedictionary.com/critical+mass>
( D2 C+ X8 U# \/ I; _8 K
" z- Q6 G; y( ]' L  c/ v9 X<>8 s- g7 I4 s5 e. Z, `2 H

6 V5 |4 v" ~: ]/ ^: o. {$ F& a[ 本帖最后由 墨涟 于 2008-10-24 15:04 编辑 ]
您需要登录后才可以回帖 登录 | 注册

本版积分规则

联系我们|小黑屋|手机版|Archiver|埃德蒙顿中文网

GMT-7, 2026-3-17 11:32 , Processed in 0.118356 second(s), 10 queries , Gzip On, APC On.

Powered by Discuz! X3.4

Copyright © 2001-2021, Tencent Cloud.

快速回复 返回顶部 返回列表