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[国外标准] BS EN 50290-2-20:2016 - Communication cables - Part 2-20: Common design rules and cotruction

drone0334

P:2023-12-02 17:48:04

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BS EN 50290-2-20:2016 - Communication cables - 

Part 2-20: Common design rules and construction - General

BS EN 50290-2-20：2016 Communication cables - Part 2-20 - Common design rules and construction - General.pdf

enamelled wire department - 漆包线车间 （0） 投诉

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