IEC 60235-8A-1974 Measurement of the electrical properties of microwave tubes Part 8 Backward-wave oscillator tubes - 0 type.《微波管电性能的测量 第8部分 O型返波振荡管 补充1》.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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