- 核扩散 hékuòsàn nuclear proliferationThe spread of nuclear weapons and technology.
- 不扩散核武器条约 Bù Kuòsàn Héwǔqì Tiáoyuē non-proliferation treatyTreaty on the Non-Proliferation of Nuclear Weapons
- 扩散周知 kuòsànzhōuzhī spread the wordto spread information widely so that everyone is informed; to let everyone know
- 核不扩散 hébùkuòsàn nuclear nonproliferation
- 气体扩散 qìtǐkuòsàn gaseous diffusion
