屋顶排水 meaning in English

roof drain

Specification for polyethylene pipe and fittings for roof drain systems
屋顶排水系统用聚乙烯管道和配件规范
A flat roof has poor drainage
平的屋顶排水差
Standard specification for polyethylene pipe and fittings for roof drain systems
屋顶排水系统用聚乙烯管和配件的标准规范
Gravity drainage systems inside buildings - part 3 : roof drainage , layout and calculation ; german version en 12056 - 3 : 2000
建筑物重力排水系统.第3部分:屋顶排水布局和计算
Specification for safety of household and similar electrical appliances - particular requirements - heated gullies for roof drainage
家用和类似用途电器的安全性.特殊要求.屋顶排水用加热集水槽沟

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