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1·The new tooth surface can be prolonged by the normal profile of the internal toroidal surface, or replaced by an equal pitch helical surface.

其二为一种修整的线接触，展成的等螺距齿面与理论轨迹曲面沿某一空间曲线近似相切。

2·Grinding gear with the toroidal involute interior thread worm grind wheel is a new kind of process in hard surface gear finish machining.

渐开面包络环面内螺纹蜗杆砂轮磨齿，是一种硬齿面齿轮精加工的新型工艺。

3·The eigen-relaxation time and eigen-function for viscoelastic toroidal deformation can be analytically given when the total layer number is up to 6 between CMB and earth surface.

当核幔-地表小于6个分层时，本文能解析地给出了粘弹性地球环形场的特征松弛时间。 并写出了地表剪切应力激发下的特征函数表达式。

4·Grinding gear with the toroidal involute interior thread worm grind wheel is a new kind of process in hard surface gear finish machining.

针对面齿轮硬齿面磨削加工中存在的困难，提出用蜗杆砂轮磨削的双参数法来磨削面齿轮。