In this paper, triangular method and matrix method have been suggested inorder to determine singular position of mechanisms.

该文提出确定机构奇异位置的两种方法：三角化法和矩阵法。

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When the material is prepared, each pipe is required to draw its developed map by using mathematics analysis, that is, common coordinate method and triangular method.

蜗壳的每一节，在下料时需要绘制展开图，采用数解法进行展开，即常用的坐标法或三角形法。

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This paper expounds the principle, the method and application results for determining the depth of underground pipeline using triangular method of horizontal magnetic field intensity.

本文阐述了利用水平磁场分量确定地下管线深度的原理方法以及应用效果。

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