watersupply and drainage pipes

• 给排水管道

watersupply and drainage pipes的用法和样例：

例句

1. This paper introduces respectively the detailed rules of the design of the outdoor water supply and drainage pipework and the regulations of the use of the auxiliary structures.
   分别介绍了室外给排水管道工程设计的细则及其附属构筑物使用规则。