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[国外标准] BS EN 50265-2-2:1999 Common test methods for cables under fire conditions-Test for resistance to vertical flame propagation for a single insulated conductor or cable-Part 2-2:Procedures-Diffusion flame

P:2023-11-07 14:54:04

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中文版的有吗

loop - 活套(轧制形成的轧材);形成活套,活套轧制,防止活套折叠;环路,回路 (0) 投诉

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