短語詞組短語nuclear excursion accident 核脫羈事故nuclear power accident 核電事故nuclear reactor accident 核反應(yīng)堆事故nuclear critical accident 核臨界事故nuclear criticality accident 核臨界事故nuclear r accident 核事故nuclear weapon accident 核武意外;核武器事故classification of nuclear accident 核事故分級nuclear power station accident 核電事故;核電站事故 返回 nuclear accident