In some respects, a second cutting element is a feedingscrew.
在一些方面中，第二切削元件为进给螺杆。
2
The increasing of screw speed can improve the pressure of material feeding tube.
螺杆的转速增加，并能提高料筒中物料的压力。
3
At present, there are two kinds of front coal feeding system - the one is conveyer belt and traditional mechanical screw conveyer, the other is pump-conveying system.