ICS13.220.50C82中华人民共和国国家标准GB/T27903—2011电梯层门耐火试验完整性、隔热性和热通量测定法Fireresistancetestforliftlandingdo...
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电梯层门耐火试验完整性、隔热性和热通量测定法Fireresistancetestforliftlandingdoors—Methodsofmeasuringintegrity,thernalinsulationan...
