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标题: BS EN 14972 -2019 [打印本页]

作者: yanmq33 时间: 2020-12-14 14:09:52 标题: BS EN 14972 -2019

EN 14972-1 2019 Edition, February 2019
Draft BS EN 14972 Fixed firefighting systems - Water mist systems. Part 1: Design, installation, inspection and maintenance

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