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primary standard of exposure
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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。
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factual parameter
Factual Record of Qing Dynasty
facture network
Fact、Meaning and Writing
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facular area
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facultative parasite
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faculty governance
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