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[国外标准] BS EN 50173-1:2007 Information technology-Generic cabling systems-Part 1: General requirements

jackfrost

P:2008-07-31 08:56:24

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BS EN 50173-1:2007 Information technology-Generic cabling systems-Part 1: General requirements.pdf

BS EN 50173-1:2007 Information technology-Generic cabling systems-Part 1: General requirements.pdf

necking-down - 断线点线径收缩(拉伸试验时常出现的情况) （0） 投诉

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