When the solenoid is de-energised, the pilot orifice closes and full line pressure is applied to the top of the diaphragm through a bleed orifice.
当螺线管德通电，飞行员口关闭并全线压力作用于出血口通过对膜片的顶部。
When the solenoid is de-energised, the pilot orifice closes and full line pressure is applied to the top of the diaphragm through a bleed orifice.
当螺线管德通电，飞行员口关闭并全线压力作用于出血口通过对膜片的顶部。
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