The proposed rod adopts a structure of screw-pair jointing, load-bearing cylinder and thin-wall tube, and is characteristic of high energy transfer efficiency and good anti-fatigue life.
新型钎杆采用螺旋副连接柱面承载结构和薄壁管式结构，具有能量传递效率高抗疲劳寿命性能好等特点。
2
In the mechanical design of the system, screwpair drive is applied to achieve the up-and-down movement.
在该系统的机械设计，双螺杆驱动器是用于实现向上和向下运动。
3
This lubrication film is easily established with "straight line enveloping screwpair" rotors, but this kind of engagement pair is very difficult to machine.