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1·To analyze and display the contact of skew bevel involute gears, a mathematic model was established by vector gyration and coordinate transform of circle vector functions and sphere vector functions.

为进行斜齿锥齿轮副的齿面接触分析，并直观显示齿面接触区，利用圆向量函数和球向量函数的矢量回转和坐标变换方法，建立了斜齿锥齿轮齿面接触分析的数学模型；

2·Evolutions of the mean square radius of gyration, the mean square end-to-end distance and the autocorrelation function of the end-to-end vector are simulated.

通过计算，研究了单链高分子的均方回转半径、均方末端距以及末端距向量自相关函数随时间的演化过程。