basic equations的用法和样例：
例句
- For the sake of designing spiral bevel gears with the best loaded contact behavior, in this paper, the movement equations for two elastic conjugating teeth are established.
本文在柔性多体运动学基础上，建立了两弹性共轭齿面运动基本方程。 - Starting with the basic equation of the hydraulic system this paper deals with the mechanism modeling for double triangle boom luffer and its hydraulic system.
从液压系统的基本方程入手，对双三角钻臂变幅机构进行了机理建模。
