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[国外标准] HD 21.7 S1/A1-1992 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V Part 7: Single core non-sheathed cables for internal wiring for a conductor temperature of 90℃

P:2009-01-23 15:35:45

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firewood wire - 耐火软电线(一种拉制直径为0.90mm和0.95mm的全退火低碳钢线) (0) 投诉

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