“density logging device”的概念、定义、翻译、参考文献-科学参考

单词	density logging device
释义	density logging device Encyclopedia 工学中子测井仪释 density logging device密度测井仪以伽马射线与地层相互作用为基础，利用同位素伽马源向地层辐射伽马射线，在一定源距外探测各种散射伽马射线，以测定地层密度的核测井仪器。又称散射伽马能谱测井仪。
随便看	nebulous patch nebulous ring NEC necator americanus necessary necessary and sufficient condition necessary and sufficient statistic necessary and sufficient σ-field necessary condition necessary condition for optimality necessary heirship necessary labor under the socialist system necessary labour and surplus labour necessary nutrients necessary observation necessary product and surplus product necessary statistic necessary topology necessity necessity and freedom in history nechanical dust collector Necitumumab Neck neck neck and shoulder pain

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