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计量单位
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计量单位
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计量单位
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measurement unit
计量单位
用于表示与其相比较的同种量的大小的约定定义和采用的特定量。任何其他同类量可与其比较使两个量之比用一个数表示。又称测量单位,简称单位。
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accidentally convergent
accidental sampling
accidental singularity
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accident analysis for nuclear power plant
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accident causation chains
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accident causation theory
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