“standard device for ground radioactivity survey”的概念、定义、翻译、参考文献-科学参考

单词	standard device for ground radioactivity survey
释义	standard device for ground radioactivity survey Encyclopedia 理学放射性勘探计量设施释 standard device for ground radioactivity survey地面放射性测量模型标准装置由天然K、U、Th矿石（粉）与石英砂、水泥混合制成的含有一定放射性物质的混凝土模块。
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