non-linear gravity wave

例句：

1. 1. The wave is non-linear, meaning it has a steeper slope at the peak than at the trough.
   这个波浪是非线性的，意味着在波峰处斜率比在波谷处要陡。
2. 2.In physics, a non-linear system is one that exhibits behavior that cannot be predicted by simple linear equations.
   在物理学中，一个非线性系统是指那些不能用简单的线性方程来预测其行为的系统。
3. 3.The data shows that the relationship between temperature and precipitation is non-linear, meaning that the amount of precipitation increases with increasing temperature.
   数据显示，温度与降水量之间的关系是非直线性的，即随着温度的升高，降水量也会增加。