petcock

The doctor shut off the petcock.

医生关掉小活栓。

The doctor shut off the petcock

医生关掉小活栓。

bilge pump petcock

舱底泵小塞门

feed pump petcock

添水泵小型旋塞

petcock

n. 放泄用小型旋塞(小龙头, 油门, 手压开关)