medium-pressure blowpipe

例句：

1. 1.The medium-pressure blowpipe is used to inject gas into the engine for starting.
   中压吹管用于将气体注入发动机以启动。
2. 2. The engineer used a medium-pressure blowpipe to clear the air filter.
   工程师使用中压吹管来清理空气滤清器。
3. 3.The medium-pressure blowpipe was used to test the new safety valve.
   中压吹管被用来测试新的安全阀门。