[问题求助] 聚氯乙烯绝缘电力电缆及耐火电缆
P:2009-10-16 19:05:50
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聚氯乙烯绝缘电力电缆及耐火电缆
PD - partial discharge局部放电,局放 (0) 投诉
P:2009-10-17 07:49:47
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楼上想说明什麽?
formation of polyethylene balloon by extrusion - 挤轧鱼泡 (0) 投诉
P:2009-10-19 09:27:25
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corrugated thin-wall steel sheath - 皱纹薄壁钢套 (0) 投诉
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