cast iron rainwater pipe
铸铁雨水管
Construction Technology for Siphon Rainwater Pipe
虹吸式雨水管施工技术
a vertical pipe for carrying rainwater down from a roof gutter
从屋顶水槽接下的竖直导水管
A vertical pipe for carrying rainwater down from a roof gutter.
水落管从屋顶水槽接下的竖直导水管
Water filling experiment of vertical pipe in rainwater discharge system for high rise building
高层建筑室内雨水管道灌水试验的讨论
A rainwater discharging pipe, a distributing pipe and a water quality sensor are arranged inside the safety distributing well.
安全分流井内设有雨水排水管、分流管和水质传感器。
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