Fire safety of large roofs for buildings - Fire exposure from below - Part 1: Definitions, requirements and tests; roof areas without openings.
建筑物大型屋顶的防火安全。从下部起火。第1部分：定义、要求和试验。封闭式屋顶区。
Fire safety of large roofs for buildings - Fire exposure from below - Part 1: Definitions, requirements and tests; roof areas without openings.
建筑物大型屋顶的防火安全。从下部起火。第1部分：定义、要求和试验。封闭式屋顶区。
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