In the solving process of homogeneous equation set, the operational procedure for elementary line transformation is sometimes not simple and convenient as it seems to be.
在齐次方程组求解的过程中，初等行变换的运算过程有时显得并不简便。
The result of the prestress design is actually the solution space of a homogeneous linear equation set.
通过分析发现，预应力设计的结果实际上就是一个齐次线性方程组的解空间。
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