1.
the trigonometry of spherical triangles.
球面三角形的三角学。
2.
The branch of mathematics that deals with the relationships between the sides and the angles of triangles and the calculations based on them, particularly the trigonometric functions.
三角学数学的分支研究三角形边、角关系以及在此基础上的计算，尤其是三角函数
3.
The tangent is an important concept in trigonometry.
"正切"是三角学中的一个重要概念。
4.
The height of the mountain has been determined by trigonometry.
该山的高度已用三角学测得。
5.
spherical trigonometry
球面三角 (法,学)
6.
the mathematics of triangles and trigonometric functions.
三角形与三角函数的数学。
7.
Economic Reflection on foreign capital speed-up gliding down of the bead triangle and long triangle Area;
“珠三角”、“长三角”外资增速下滑的经济学思考
8.
(mathematics) of a triangle having three sides of different lengths.
（数学）有三条长度不等的边的三角形。
9.
The function of triangle interior angle summation theorem evolving in mathematics development
三角形内角和定理的演变在数学发展中的作用
10.
a mathematician specializing in trigonometry.
专门研究三角法的数学家。
11.
"Trignometry," Norman said; "a higher form of math."
“三角课”诺尔曼说，“一种高级数学。”
12.
System Dynamic Research on Yangtse River Marine System;
长江三角洲水运物流系统动力学研究
13.
Study on Physiological Energetics of Hyriopsis Cumingii (Lea);
三角帆蚌Hyriopsis cumingii（Lea）生理能量学研究
14.
Economic Perspective on the "Shortage of Peasant-laborers" in Pearl River Delta;
珠三角“民工荒”问题的经济学透视
15.
Anatomical observation on the rooting of the cutting of Bougainvillea spectabilis;
三角梅插穗扦插生根过程解剖学观察
16.
The Three Dimemsions of Biblical Allusions in British and American Literature;
英美文学中《圣经》典故的三维视角
17.
The legal Interpretation of Administrative Agreements in Zhujiang Delta;
泛珠三角地区政府间协议的法学分析
18.
The Point of View About the Physical Training Process From"Three Theory";
从“三论”的角度审视体育教学过程