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[国外标准] IEC 60227-4:1997 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V Part 4:

P:2010-04-22 16:17:22

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IEC 60227-4:1997 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V Part 4:.pdf

Temperature Raise - 温昇。电线或电缆由无负载到满载电流时其间温度之差异或改变,在计算安全电流或短路电流时为极重要的数据之一。 (0) 投诉

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