英语语法分析

In this paper, two new trigonometrical inequalities are given, and applied to discuss triangle shapes.

给出两个新的三角不等式，并将其应用于讨论角成等比的三角形形状。

Trigonometrical function in the teaching of mathematics in secondary schools, have a decisive position.

三角函数的教学在中学数学教学中有着举足轻重的地位。

In this paper, the deflection and stress function in terms of trigonometrical function and polynomial expression are first proposed.

本文首先选择由三角函数和多项式组成的挠度函数和应力函数。