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[国外标准] BS EN 50288-2-2:2003 Multi-element metallic cables used in analogue and digital communication and control

zhaogy2006

P:2011-05-11 16:41:39

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BS EN 50288-2-2:2003 Multi-element metallic cables used in analogue and digital communication and control.pdf

BS EN 50288-2-2:2003 Multi-element metallic cables used in analogue and digital communication and control.pdf

buzz-out operation - 振铃查线；摇通(手摇电话)；振铃试验 （0） 投诉

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