brass air cock

例句：

1. 1. The brass air cock on the ventilator is broken, so we need to replace it immediately.
   通风机上的铜制空气调节器坏了，所以我们需要立即更换。
2. 2. The engineer checked the brass air cock and found that the valve was slightly leaking.
   工程师检查了铜制空气调节器，发现阀门有轻微泄漏。
3. 3. The brass air cock is a crucial part of the heating system, and any damage can cause seriousproblems.
   铜制空气调节器是供暖系统的关键部分，任何损坏都可能导致严重问题。