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[国外标准] IEC 60216-4-1:2006 Electrical insulating materials – Thermal endurance properties – Part 4-1: Ageing ovens – Single-chamber ovens

P:2011-04-28 19:42:25

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porosity - 多孔性,孔隙率;气孔,砂眼,沙眼 (0) 投诉

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