1.Based on the method to design the 3-D knottiness gimbale transmission shaft,the torsion vibration is reducde,and the syntony is also avoided.

1.按此法设计计算三维空间多节万向传动轻系统扭及避免共。

2.It explains the reason of gentle breeze syntony about sustained tubate generatrix in hydromechanical viewpoint,and puts forworld several methods for avoiding gentle syntony.

2.用流体力学的观点解母线发生微风动的原因,并提出防止和消除微风动的几种方法。