主要考虑非线性波方程组的一些简单对称及其构成的李代数，并利用所得对称给出该方程组的一些单参数变换群。
In this paper, the symmetries and Lie algebra of a coupled nonlinear wave equation were discussed. One-parameter transformation groups of this equation were obtained by using the symmetries.
提出椭圆旋转对称群，它是一个单参数阿贝尔群。
The ellipse rotating symmetric group is proposed, which is an Abelian group.
提出椭圆旋转对称群，它是一个单参数阿贝尔群。
The ellipse rotating symmetric group is proposed, which is an Abelian group.
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