建立两个含角参数的三角形不等式，加强了三角形基本不等式。

This paper established two triangle inequalities containing angular parameter and the fundamental inequality of triangle was strengthened.

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地层移动角参数对巨厚松散层矿井的建筑物保护煤柱尺寸影响很大，经济潜力十分巨大。

The displacement Angle of strata has a great bearing on the size of coal pillar for protection of buildings on very thick unconsolidated layers, and has a great economic potentials.

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将亏格为零的三维模型进行球面参数化的方法大致可以分成3类：(1)基于累进网格的方法(2)球面松弛的方法(3)保角参数化方法。

These methods can be divided into three: (1) method based on progressive mesh (2) method based on sphere relaxation (3) conformal method. The three methods have their own advantages and shortcomings.

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