Relationship is mainly discussed between equivalent matrix and equivalent vector groups. With the same number in different vector groups, some conclusions about equivalent vector groups are drawn based on elementary row operation, and application is shown by an example.%该文主要讨论了矩阵等价和向量组等价之间的联系，在包含相同个数向量的前提下，获得了借助初等行变换研究向量组等价的重要结论，并通过实例具体说明了应用方法。
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