elbow bend pipe

例句：

1. 1. The elbow bend pipe is used to connect two pipes together.
   肘弯弯曲管用于连接两根管子。
2. 2.The elbow bend pipe was designed to reduce friction between the pipes.
   肘弯弯曲管设计用来减少管子之间的摩擦。
3. 3. The elbow bend pipe is commonly used in water supply systems.
   肘弯弯曲管在供水系统中常用。