flame-spread classification

基本解釋

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.
對建筑材料和結(jié)構(gòu)的著火試驗(yàn)-第7部分：產(chǎn)品火焰表面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(biāo)準(zhǔn)對建筑材料和結(jié)構(gòu)的著火試驗(yàn)-第7部分：產(chǎn)品火焰表面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.
對建筑材料和結(jié)構(gòu)的著火試驗(yàn)-第7部分：產(chǎn)品火焰表面延伸等級確定的測試方法。