critical mass

2025-08-24

n.(核鏈式反應的)臨界質量 牛津詞典 noun （核鏈式反應的）臨界質量the smallest amount of a substance that is needed for a nuclear chain reaction to take place 柯林斯詞典 (核鏈式反應的)臨界質量In physics, the critical mass of a substance is...