back pressure relief valve

例句：

1. 1. The back pressurerelief valve is designed to prevent the buildup of pressure in the system.
   背压释放阀的设计目的是防止系统中压力的积累。
2. 2.The engineers installed a new back pressurerelief valve to improve efficiency.
   工程师们安装了一个新的背压释放阀以提高效率。
3. 3. The backpressure relief valve was used to relieve thepressure in the pipeline during maintenance.
   在维护期间，使用了背压释放阀来减轻管道中的压强。