“natural radioactivity survey instrument”的概念、定义、翻译、参考文献-科学参考

单词	natural radioactivity survey instrument
释义	natural radioactivity survey instrument Encyclopedia 工学天然放射性勘查仪器释 natural radioactivity survey instrument天然放射性勘查仪器利用天然放射性核素的衰变规律所产生的电磁辐射进行核素测量的放射性勘查仪器。
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