单词 | atom bomb |
释义 | atom bomb (also atomic bomb) noun A bomb which derives its destructive power from the rapid release of nuclear energy by fission of heavy atomic nuclei, causing damage through heat, blast, and radioactivity.The simple atom bomb owed its explosive power to the energy released by nuclear fission, or fusion....
Such a bomb contains a critical mass of a material such as uranium-235 or plutonium-239, which when detonated by a conventional explosive charge is capable of maintaining a nuclear chain reaction, releasing large amounts of energy almost instantaneously. |
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