Transform a matrix to a diagonal matrix.

把一个对角矩阵转化成对角矩阵。

The first form returns the diagonal matrix.

第一种形式返回对角矩阵。

The lumped mass matrix is a diagonal matrix.

集中质量阵是一个对用阵。

The square matrix is called a diagonal matrix.

该方矩阵称为对角矩阵。

However, seeking a power of diagonal matrix is very difficult usually.

然而转化为求对角矩阵的方幂比较困难。