By taking 135 three-screw pump as an example, the geometric parameter design, the forming of spiral surface and the characteristic of screwgearing are investigated.
以135型三螺杆泵为例，对螺杆几何参数设计、螺旋型面的形成、螺杆啮合特性进行了探讨。
2
Because planet differential gearing has some weakness someone suggests we can use hydraulic transmission to drive the horizontal screw decanter.