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标题: ISO 6944-1985 [打印本页]

作者: jiyunshang    时间: 2020-3-27 11:38:02     标题: ISO 6944-1985

Fire tests on building materials and structures —
Part 24: Method for determination of the fire resistance of ventilation ducts —


作者: admin    时间: 2020-3-31 16:27:40

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