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交-直流仪器
将被测交流电量参数(如交流电流、交流电压、有功功率、无功功率、有功电能、无功电能、频率、相位、功率因数等)按比例转换成直流电流、电压,并隔离输出模拟信号或数字信号的仪器。
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equal time sample design
equal to
Equal traffic rights
equal triangles
equal trivectors
equal value gray scale
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equal weight average combination
equal weighted rate of return
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equational class of lattices
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