NBN B 05-202-1976 6875 《建材的耐低寒性测试 气孔测定》.pdf

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NBN B 05-201-1976 8750 《建材的耐低寒性测试 水经由毛细作用的渗透量》.pdf

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NBN B 05-203 6875 《建筑材料试验，耐低寒性，直接循环》.pdf

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