“unsealed radioactive material”的概念、定义、翻译、参考文献-科学参考

单词	unsealed radioactive material
释义	unsealed radioactive material Encyclopedia 工学非密封放射性物质释 unsealed radioactive material非密封放射性物质非永久密封在包壳里或者紧密地固结在覆盖层离的放射性物质。
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