sine function

For anyone that needs a little refresher course, the sine function gives the ratio of the opposite side of a given angle in a right triangle to the hypotenuse.

一些人需要复习一点数学课程，正弦的作用是给出在一个直角三角形中的一个已知角所对应的一条边与直角三角形斜边之间的比率。

Aim To study some calculation formula of sine function and cosine function.

目的研究正弦函数和余弦函数的一些计算公式.

Then, the paper analyzes the spread of the sine function and development in China.

而后，本文整理了正弦函数在中国的传播与发展。

Preparation of Semi-solid Aluminum Alloy by Sine Function Method

Sin函数冷却法制备半固态铝合金

The classical signal analysis method is Fourier transformation, whose essence is to decompose the signal wave into many sine waves, and which also can be seen as representation of time function in frequency domain.

傅里叶（Fourier）变换是经典的信号分析方法，其实质是：把波形分解成许多不同频率的正弦波之和，可看作是时间函数在频率域上的表示。

Function signal generator of the system can produce sine, square, triangular wave.

函数信号发生器本系统能够产生正弦波 、 方波 、 三角波.

Research on wavelet chaotic neural network with disturbance of sine function

带正弦函数扰动的小波混沌神经网络研究

The results found that the entanglement is a sine function over time.

结果发现，其纠缠度是一个随时间呈正弦变化的周期函数。

The color texture modeling which uses sine function was built.

利用正弦函数的变化规律对植物表面颜色纹理进行模拟。

Coefficient formulae derived belong to forms of the sine function.

所推导的系数公式都属正弦函数形式。

This paper proves that the smooth degree of a data row can be increased by transforming the counter-hyperbolic sine function.

证明了利用反双曲正弦函数变换能提高数据列的光滑程度，给出了改善的自回归预测方法，并且举例加以论证。

Symbol of operator is the function of operator acting on sine function.

算子作用于正弦波函数所得函数称为算子的象征。