英语词汇“naturally occurring radioactive substance”的读音、翻译、释义、用法及例句-智慧网

词汇	naturally occurring radioactive substance
释义	naturally occurring radioactive substancenaturally occurring radioactive substance1.■天然放射性物质
随便看	reaction regeneration reaction relation reaction rim reaction rim texture reaction ring reaction rotating sprinkler reaction rudder reaction scheme reaction sensitivity reaction series reaction servomechanism reaction servo-mechanism reaction shot reaction sintering reaction soldering reactionsoldering reaction species reaction speed reaction spinning reaction spring reaction stage reaction stage reaction step reaction steam turbine reaction step reaction stepping motor

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