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交流电流基准
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交流电流基准
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交流电量计量
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AC current standard
交流电流基准
建立和保存交流电流量值的国家级计量装置。电流标准的频率范围较宽,从工频50赫兹向上至100千赫。
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finite rank operator
finite region
finite representation
finite representation type
finite Riemann surface
finite ring
finite rotation
finite-rowed matrix
finite sample
finite scheme
finite semigroup
finite sequence
finite series
finite set
finite set algebra
finite-sheeted surface
finite simple group
finite simplicial complex
finite singularity
finite size effect
finite-size effect
finite size scaling
finite-size scaling
finite source queue
finite space
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