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

P:2023-01-12 10:00:18

2

这种老标准就不要发了吧,

hot air vulcanization - 热空气硫化 (1) 投诉

P:2023-01-13 08:02:46

3

gas-fired or electrically heated wire enamelling plant - 燃气式或电热式漆包设备 (0) 投诉

3


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