Because of this, this paper optimizes the solution further regarding matrix and vector quantity as tools, and it can produce the result through linear expression after elementary line change.
正基于此，本文进一步以矩阵和向量为工具对解法进行优化，使通过初等行变换后经线性表出就可以产生结果。
Total quantity check of pollutant discharge was the most difficult elementary work of total quantity control of pollutant discharge.
排放污染物总量核定是排放污染物总量控制中的一项难度很大的基础工作。
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