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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:2011-04-28 21:50:07

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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.pdf

ultrasonic gauge - 超声波检测仪(一种非破坏性测试仪器,利用超声谐振原理测定金属和塑料的厚度) (0) 投诉

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