Taking into account the friction force between obturator ring and liner, this approach is closer to the real condition than the conventional one.
该方法考虑了闭气环与衬套之间的摩擦力，比常规方法更接近实际；
2
The application includes membrane of membrane pump, impeller, piston, leather of piston, wearable ring and liner of pump and plastic binder applied to industrial repair.
隔膜泵隔膜、叶轮、活塞、活塞皮碗、泵的衬里、抗磨环及用于工业修补剂的塑料粘结剂。
3
The embedding part includes volute socket ring, tail water taper pipe, tail water ell, pit liner and so on.