trigonometry sum三角和
analytical trigonometry解析三角学
geometry trigonometry三角学
Trigonometry Mathematics三角数学
Advanced trigonometry高等三角学
Trigonometry refresher三角学重温;三角学
Laser Trigonometry激光三角法
Compasses scale as well as introduced geometry and trigonometry brought into big changes to making of sundial and the astronomical observation and the calculation of specific gravity.
比例规与同时传入的三角学、几何学等内容,对中国人制作日晷和天文测量产生了积极影响。
参考来源 - 罗雅谷的《筹算》和《比例规解》在中国N-UNCOUNT（不可数名词） Trigonometry is the branch of mathematics that is concerned with calculating the angles of triangles or the lengths of their sides. 三角学