semishrouded impeller

例句：

1. 1. The semishrouded impeller is a crucial component of the machine's operation.
   被屏蔽的叶轮是机器运行的关键部件。
2. 2.The engineer carefully removed the semishrouded impeller to inspect its condition.
   工程师小心翼翼地移除了被屏蔽的叶轮以检查其状况。
3. 3. The semishrouded impeller was designed to improve efficiency and reduce noise in the machinery.
   被屏蔽的叶轮设计用于提高机械效率和减少噪音。