When coolant stops flowing through, the contact surfaces have to be opened to prevent dry friction so that the system life cycle is elongated.
When coolant stops flowing through, the contact surfaces have to be opened to prevent dry friction so that the system life cycle is elongated.
当冷却剂停止穿越时，这封闭面将马上打开避免摩擦，而这个功能保证寿命长。