首先引入矩阵的相似准直和的定义，讨论了它和群逆的关系，得到了一些性质和应用．。

The definition of similar quasi-direct sum of matrix is introduced. Andthe connection with group inverse is discussed. Some properties and applications are obtained.

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结果表明，该方法是集结区间数判断矩阵群信息最有效的方法之一。

The result showed that the method was one of the most effective methods for aggregating group information under interval-number judgment matrixes.

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十九世纪的代数学知识体系庞大，它包含置换群、矩阵、代数数论、代数几何等多个分支。

In the nineteenth century, the system of algebraic knowledge is enormous, which contains the permutation group, matrix, algebraic number theory, algebraic geometry and other branches.

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