英语语法分析

In 1728 Euler gave differential equations for geodesics on surfaces.

1728年，奥伊勒绘出了曲面上测地线的微方程。

It is proved that geodesics can be produced by stretch elastic strings along a smooth surface.

可以证明，连接平滑曲面上任意两点的弹性细丝当拉紧时具有测地线的形状。

Adopting geodesics as dividing lines, space surfaces were developed by minimal extremum method.

采用测地线划分曲面，应用最小极值法进行曲面的展开。