prEN2824,2825 and 2826: BS6853:1999 Annex B: Determination of weighted summation of toxic fume,R,-B.2 Area based test method.
BS6853:1999附录B.2: 载客列车设计与构造防火通用规范-附录B.2: 测定有毒烟雾的加权总和R值,基于面积的测试方法。
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