“primary standard of exposure”的概念、定义、翻译、参考文献-科学参考

单词	primary standard of exposure
释义	primary standard of exposure Encyclopedia 工学照射量基准释 primary standard of exposure照射量基准复现X射线（5～300千伏）和γ射线（137Cs, 60Co）照射量量值，用于标准和工作级计量器具的量值传递。
随便看	Three Jingzhou Areas three-j symbol three judicial offices three jugs problem three karma Three Kazak’s Yuzs three-Kelvin [background] radiation three-Kelvin background radiation three-Kelvin radiation three-kiloparsec arm three kinds of boundary conditions three kinds of nature theory three kinds of vitality Three kinds of written expression, four languages Three Kingdoms Three Kingdoms blue glazed brown color plumage double-lined pot three knife trimming three labor rights three laws of Japanese social education three laws of motion three layer polyethylene coating three-layer surface complexation model three-leafed rose Three Lectures on Aesthetic three-level degree system

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