The nine elements of the matrix are products of cosines of angles between the direction of a streamline at a point and the coordinate axis.
这矩阵的9个元素系一点的流线方向和座标轴之间夹角余弦的乘积。The inverse function of that restricted cosine function is called the arccosine function.
被限定的余弦函数之反函数叫做反余弦函数。We note that the technique is applicable to any image compression method which employs discrete cosine transforms and quantization.
我们注意到，该技术适用于任何的图像压缩方法，采用离散余弦变换和量化。and an analysis of the law of transfer arm movement, transfer arm rotational angular velocity is cosine changing law.
并且对除渣器转臂的运动状况进行了分析，得到了其运动规律成余弦规律变化；the probability amplitude of it's ground state and excited state is the cosine's summation form and the sine's summation form respectively.
其基态和激发态的概率幅分别具有余弦求和与正弦求和的形式。In the fourth chapter, give an implementation of the auto-correlation, Shure recursive, discrete cosine transform in a hardware environment.
在第四章用硬件实现了自相关、舒尔递推、离散余弦变换等关键模块。the cosine approximation arithmetic generates too large error to be used in numerical simulation despite of saving more time.
余弦近似法虽更省时但误差较大，数值模拟中不宜采用。Its solution is the cnoidal waves and solitary waves for the inertia-gravity waves, and its dynamic characteristics are discussed.
它的解为椭圆余弦波和孤立波，并讨论了惯性重力内椭园余弦波和孤立波的动力学主要特征。Then, Discrete Cosine transform was used to analyze the shape and leg angle characteristic and represent the gait features.
然后，采用离散余弦变换分析了步态外形特征和角度特征。