auxiliary standard pipe

例句：

1. 1. Theauxiliary standard pipe is used toconnect the main pipe and the branch pipe.
   辅助标准管用于连接主管和支管。
2. 2. The auxiliary standard pipeis a crucial component of the water supplysystem.
   辅助标准管是供水系统的关键组成部分。
3. 3.The auxiliary standard pipe isdesigned to provide additional support for the mainpipe.
   辅助标准管设计用来为主管提供额外的支撑。