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短语
active material
军队 радіоактивна речовина
军队, 后勤 речовина, що розщеплюється
油和气 активна речовина
 英语 词库
active material
军队 Material, such as plutonium and certain isotopes of uranium, which is capable of supporting a fission chain reaction
军队, 后勤 Material, such as plutonium and certain isotopes of uranium, which is capable of supporting a fission chain reaction. (FRA)
active material
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