IEC 60235-2D-1976 Measurement of the electrical properties of microwave tubes Part 2 General measurements.《微波管电性能的测量 第2部分 一般测量 补充4》.pdf

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IEC TR2 61464-1998 Insulated bushings - Guide for the interpretation of dissolved gas analysis (DGA) in bushings where oil is the impregnating medium of the mai.pdf

IEC TR 61241-2-2-1993 Electrical apparatus for use in the presence of combustible dust part 2 test methods section 2 method for determining the electrical resis.pdf

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