The rainwater seepage question on the flat roof of building construction has been perplexing project for builder and house user. The main position of its seepage lies in lashing.
房屋建筑平屋顶的雨水渗漏问题一直困扰着广大工程建设者和房屋使用者，其渗漏的主要部位在于泛水。
The rainwater seepage question on the flat roof of building construction has been perplexing project for builder and house user. The main position of its seepage lies in lashing.
房屋建筑平屋顶的雨水渗漏问题一直困扰着广大工程建设者和房屋使用者，其渗漏的主要部位在于泛水。
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