Normally globe valves are installed with flow under the disc, but under certain conditions flow over the disc may have advantages.
正常情况下，安装的截止阀要使得流体从阀瓣下端流进，但是，某些应用场合，流体从阀瓣上方流进可能更加有利。
By changing the Angle of rotation of the disc can control the flow classification.
通过改变蝶板的旋转角度可以分级控制流量。
The flywheel , when coupled with the clutch disc and pressure plate makes and breaks the flow of power the engine to the transmission .
当飞轮和离合器盘、压盘一起能够传递或中断发动机到变速器之间的动力。
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