The magnitude of pressure has nothing to do with the direction of the rotation and the drag coefficient is larger than that of a non-rotation golf ball.
并发现带有旋转效应的凹坑高尔夫球受到的阻力系数增大；
2
Conclusion The rapid angulation rotation is an effective treatment for lumbar inter-vertebral disc protrusion and this non operative method should be used as early as possible.
结论成角旋转快速牵引治疗中央型及侧后型腰椎间盘突出症，临床疗效较好，建议及早进行该项非手术治疗。
3
To introduce structure and process design of horizontal adjustable predeformation apparatus according to production require of FNR series multilayer stands nonrotation ropes.