“排气孔”用英语怎么说

他使橡胶塞牢固地塞进盖上的排气孔.He presses the rubber stopper firmly down on the vent.当掀下按钮时,排气孔通道被阻断,输出信号增大.When the button is depressed the vent is closed and the output signal increases.锁定排气孔.The exhaust port is marked and locked in...