Microstructure and properties of ACR copper tube during three-roll planetary milling process;
三辊行星轧制过程中ACR紫铜管的组织和性能演变
Rolling force prediction and analysis of three-roll planetary rolling process based on FEM;
基于有限元的三辊行星轧制力预测及分析
Computer simulation on the movement and deformation rules of three-roll planetary rolling process of Copper tube;
三辊行星轧制运动和管坯变形规律的仿真模拟
Models of finite element simulation on three-roll planetary rolling process of cast copper tubes;
连铸铜管坯三辊行星轧制的有限元模型建立
Specification optimization for three-roller planetary rolling;
三辊行星轧制工艺参数优化技术研究
3D modeling for three-roller planetary rolling;
三辊行星轧制空间模型建立研究
Research on Finite Element Simulation of Four-roll Planetary Rolling Process of Copper Tubes;
铜管四辊行星轧制工艺有限元模拟研究
Dynamic Test of Contact Tooth Pair Numbers of the N Type Involute Planetary Transmission with Minor Tooth Difference;
N型渐开线少齿差行星传动接触齿对数的动态实测
Correlation between spin angular momentums and background angular momentums of planets;
行星自旋角动量和背景角动量之间的相关性
Proving Keippler s 3 Laws of Planetary Motion;
开普勒行星运动三定律证明
By means of the Runge -Lenz s vector the problems of the planets motion around the sun are solved in classical and relativistic cases.
本文讨论了Runge－Lenz矢量的性质，并利用它求解经典情况下和狭义相对论情况下的行星绕日问题。