“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	Euler relation Euler rotation theorem Euler rule Euler's equation Euler's equations of motion Euler series Euler series transformation Euler simulation Euler's kinematical equations Euler's number Euler's pentagonal number theorem Euler spiral Euler square Euler's theorem Euler straight line Euler substitutions Euler sum Euler summation formula Euler summation method Euler sum of powers conjecture Euler system Euler theorem Euler theorem on polyhedra Euler totient function Euler totient rule

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