“gun-type atomic bomb”的概念、定义、翻译、参考文献-科学参考

单词	gun-type atomic bomb
释义	gun-type atomic bomb Encyclopedia 工学原子弹释 gun-type atomic bomb枪法原子弹用炸药爆炸产生的高压力推动两三块处于次临界状态的裂变材料迅速合拢成为超临界状态，并适时提供若干中子触发链式裂变反应，瞬时释放巨大能量的原子弹。又称压拢型原子弹。
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