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harmonic energy meter
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harmonic energy meter
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harmonic energy meter
谐波电能表
分别测量并记录基波有功电能和规定的(第)2~(第)n次谐波有功电能的仪表。
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convex mirror
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convexo-concave lens
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convex optimization theory
convex polygon
convex polyhedral angle
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convex polyhedral set
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convex-preserving fitting
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