| 单词 | plutonium pit | 
| 释义 | plutonium pit (extremely rare) n WORD FAMILY plutonium pitUSAGE EXAMPLES The administration has already put $2.5 billion into the plutonium pit facility at Los Alamos National Laboratory. Washington Post(May 06, 2014) n a steel or beryllium sphere containing plutonium 239 that triggers nuclear fission when compressed by explosives Syn|Hyper plutonium trigger trigger a device that activates or releases or causes something to happen | 
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