porous concrete pipe

例句：

1. 1. This type of pipe is commonly used in water supply systems.
   这种类型的管道常用于供水系统。
2. 2. The porous concrete pipe is designed to allow for easy cleaning and maintenance.
   这种多孔混凝土管设计成易于清洗和维护。
3. 3. In some areas, the use of porous concrete pipes has been banned due to concerns about their potentialto cause water pollution.
   在一些地区，由于担心多孔混凝土管可能导致水污染，已禁止使用。