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Nuclear weapons:7 m6 u5 }# ]/ n; g/ \. j2 X) I
http://nuclearweaponarchive.org/Nwfaq/Nfaq0.html
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Weapons 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: + C+ N$ `+ q& X0 G6 {% k$ y( Z4 O- a
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Nuclear 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: # P5 t6 p, t6 b, j+ w1 R
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Clark, 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:
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- }! ^6 [4 Q- ~. v# mLerner, 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:
% R+ Q2 `5 y, t! G& r<http://find.galegroup.com/gvrl/i ... 925&version=1.0> T6 I j. C% D/ T( G
: Y, ^( j5 b( E. S! r0 ucritical mass
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0 Q% l- r1 k& `$ ?1. The smallest mass of a fissionable material that will sustain a nuclear chain reaction at a constant level.
% d3 t+ d9 T$ M' o# N: e8 I2. The amount of matter needed to generate sufficient gravitational force to halt the current expansion of the universe
! E |; f, V5 E( G( a! k9 d( v4 q<http://www.thefreedictionary.com/critical+mass>' A2 {/ [/ g) I! {, O
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. M ^$ ]" M. z( x" I[ 本帖最后由 墨涟 于 2008-10-24 15:04 编辑 ] |
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