| 单词 | fast neutron |
| 释义 | fast neutron in British Englishnoun physics a. a neutron produced by nuclear fission that has lost little energy by collision; a neutron with a kinetic energy in excess of 0.1 MeV b. a neutron with a kinetic energy in excess of 1.5 MeV, the fission threshold of uranium-238 Examples of 'fast neutron' in a sentence |
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