“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。
随便看	velocity-distance relation velocity distribution velocity distribution function velocity distribution law of ideal gas molecules velocity ellipse velocity ellipsoid velocity field velocity-flow relation velocity for erosion and sedimentation control velocity gain guidance velocity gradient velocity-gradient force velocity-gradient tensor velocity hodograph velocity in free space velocity loss coefficient of turbine guide vanes velocity matching velocity measurement velocity measurement of radio navigation velocity measurement quantity velocity modulation velocity of detonation velocity of entry velocity of escape velocity of flue gas

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