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radioactive materials
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radioactive materials
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radioactive materials
放射性物品
放射性物品有广义和狭义之分。广义的放射性物品泛指能够放射出射线的物品。狭义的放射性物品是指含有放射性核素且比活度和放射性总活度分别超过基本限值的物品。
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data trading
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