本文讨论了三角函数在有理度数上的取值的代数性质，得出其取值均为代数数。
This paper discusses an algebraic property of values of rational degrees of triangle functions. We obtain that they are all algebraic Numbers.
针对层次分析法的不足，本文提出用五个三角模糊标度数来代替语言变量，以说明待选方案对评价准则的相对影响程度。
In view of the drawback of AHP, this paper advances to substitute five triangle fuzzy scale Numbers for linguistic variables, in order to evaluate the appraisal criteria's influence on alternative.
采用微分方程高精度数值解法得到了随时间变化的摆角、摆长、摆长变化率以及运动轨迹的数值精确解。
The accurate numerical solutions of the angular displacement, the length and its rate, and the path are given with the numerical method.
顾及地形特征线的散点域(约束数据域)三角剖分是建立高精度数字地面模型的基础，在GIS、地学分析、计算几何、多分辨率DTM等领域中有着广泛的应用。
The triangulation of constrained data set is widely used in Geographic Information System (GIS), geo-science, computational geometry, multi-resolution and high precision DTM, et al.
顾及地形特征线的散点域(约束数据域)三角剖分是建立高精度数字地面模型的基础，在GIS、地学分析、计算几何、多分辨率DTM等领域中有着广泛的应用。
The triangulation of constrained data set is widely used in Geographic Information System (GIS), geo-science, computational geometry, multi-resolution and high precision DTM, et al.
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