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关注:1
2013-05-23 12:21
求翻译:When the fire roller shutter whose temperature rise at the unexposed side is used as the fire resistance rating criteria is used, its fire resistance rating can’t be less than 3.00h是什么意思?![]() ![]() When the fire roller shutter whose temperature rise at the unexposed side is used as the fire resistance rating criteria is used, its fire resistance rating can’t be less than 3.00h
问题补充: |
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