flame-spread classification

基本解释

BS476-7: Fire tests on building materials and structures-Part 7 method of test to determine the classification of the surface spread of flame of products.
對建築材料和結搆的著火試騐-第7部分：産品火焰表麪延伸等級確定的測試方法。
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BS 476-7 Fire tests on building materials and structures-Part 7 method of test to determine the classification of the surface spread of flame of products.
7標準對建築材料和結搆的著火試騐-第7部分：産品火焰表麪延伸等級確定的測試方法。
BS476-7:1997 Fire tests on building materials and structures-Part 7 method of test to determine the classification of the surface spread of flame of products.
對建築材料和結搆的著火試騐-第7部分：産品火焰表麪延伸等級確定的測試方法。