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。
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。
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