gravity pipe

例句：

1. 1. The gravity pipe is designed to distribute the water evenly across the entire length of the pipeline.
   重力管设计用来在整个管道长度上均匀分配水。
2. 2.The gravity pipe was installed in the basement to prevent water from leaking into the living space.
   重力管被安装在地下室以防止水渗入生活空间。
3. 3. The gravity pipe was used to collect wastewater and transport it to the treatment plant.
   重力管被用来收集废水并将其输送到处理厂。