Writing such technical and specific paper will get no correction from people who are not in the field.  This is because we don't possess the precise technical jargon to correct you.  You get better help and accuracy from Google translator if you write in very simple Chinese wording.  At a glance, your English essay looks like Greek to me.  Sorry can't help you here.

Professional mechanical paper

The institution which simply accords with the rapier’s motion law can be used as a rapier weft-insertion mechanism. Therefore, rapier weft-insertion mechanisms have many types. More typical types have the conjugate cam weft-insertion mechanism, the variable lead helical weft-insertion mechanism, the space four bar linkage weft-insertion mechanism, etc.Cam type loom′s rapier transmitting system ,whose rapier head’s motion law can be designed according to the need in theory and structure is more complex, has more requirements on cam profile’s machining precision and the manufacturing is very difficult. Once the cam profile be decided, the motion law of loom′s rapier transmitting system also can be identified and can’t change according to the change of weaving fabric.To worm type loom′s rapier transmitting system, it’s transmission chain is short, structure is tight, occupy small area, etc. But it has more requirements and more difficult on screw processing and the transmission efficiency of screw thread pair is also low. In addition, variable pitch screw weft-insertion mechanisms can’t be universal in different reed assistants.Link type loom′s rapier transmitting system’s structure is simple, it could install quickly, and its maintains is very convenience. But its characteristics of motion is hard to control, with numbers of pro-cyclical vices, the kinematic errors and noises still be a problem.Thus, these traditional rapier weft structure is complex, motion inertia is strong, and the head of rapier’s motion characteristics are totally depends on design of the mechanism itself. In use process, we cannot do corresponding modification according to the different fabric structure of three-dimensional. Therefore these traditional rapiers’ limitations could not fit to the diversity of the 3-D fabric weaving.