And this again is the fissile isotope.
这也是易裂变同位素。
With China's help, Pakistan had already been expanding fissile-material production.
而在得到中国的帮助下，巴基斯坦已经扩大了其裂变材料生产。
The few fissile materials could not maintain the chain type response (overwhelming majority neutron escape).
少量的裂变材料不能维持链式反应(绝大多数中子逃逸了)。
The few fissile materials could not maintain the chain type response (overwhelming majority neutron escape).
少量的裂变材料不能维持链式反应(绝大多数中子逃逸了)。
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