plug valve的用法和样例：
例句
- Then as the plug valve is lifted off its seats, any accumulation below the plug or on the seats will be blown back into the line.
然后，当旋塞阀升离阀座时，任何累积在阀塞或阀座上的吹入物质都将被吹回到管路内。 - Electrical pulses pass through the injector winding, and set up a magnetic field that draws the plunger and valve away from the nozzle seat.
脉冲很快，电脉冲通过注油器缠绕，并建立了一个磁场，吸引着柱塞阀原理喷油嘴座。
