NFX10-702-2:1994 Fire test methods. Determination of the opacity of the fumes in an atmosphere without air renewal. Part 2 : test method applicable to the materials non covered by parts 3, 4, 5 and following. NF X 10-702-2:1994 防火测试方法.在空气不更新环境下烟的暗度测定.第2部分:测试材料及测试方法不包括第3,4,5及下面内容.
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