This article drilled takes the core method the elementary operation eo request, the matters needing attention has carried on the summary.

本文就钻取芯样法的基本操作要求、注意事项进行了简述。

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In this paper, by application of matrix elementary operation, we give the method of solving for plane projective collineation. The method presented in this paper is simpler and clearer than used one.

本文介绍一种利用矩阵的初等行变换求解平面直射变换式的方法，它较一般解法更为简明。

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