IEC 60235-4A-1975 Measurement of the electrical properties of microwave tubes Part 4 Magnetrons First supplement Clause 4 Voltage tunable magnetron《微波管电性能的测量 第4部分 磁控管 补充1 第4条 电压调谐磁控管》.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

IEC TR 60972-1989 Classification and interpretation of new lighting products《新型照明产品的分类和说明》.pdf

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