余弦

Also, we have shown experimentally that the optimal multi-bank Haar wavelets perform better than DCT in image compression.

同时，我们用图像缩编码的方法验证了最优多进Haar小波的性能优于离散余弦变换的。

Respective analytical and general expressions were derived according to different commonly-used PASs of uniform, cosine, Gaussian and Laplacian distribution.

针对常用的均匀分布、余弦分布、高斯分布和拉氏分布的入射波角度功率谱，分别推导了多谱勒功率谱解析式。

The AC coefficients of an image's Discrete Cosine Transform are best approximated by Laplacian distribution model. Based on this model,the blind information hiding algorithm was proposed.

基于图像离散余弦变换交流系数的拉普拉斯分布模型，提出了一种盲提取数字图像信息隐藏算法。

The point of intersection of three light-source on tested body is used as basic point, the mathematical model of line displacement is established.

并以固结在被测体上的三个激光器的交点为基点，建立其线位移数学模型；以方向余弦法来确定被测体的角位移，建立其角位移数学模型。

Digital trigging control for cycleconverter was developed. It was verified with experiments.

在余弦交点法的基础上，较好地实现了交—交变频器的数字触发控制技术，为进一步研究打下了基础。

As the ordinary cadres, he cos I'm always skint, so decided to sell the living room, the family moved into the shared rental.

作为普通干部，他余弦我总是skint ，所以决定出售客厅，家庭搬进了共同的租金。

This requires two sine-cosine resolvers.

这就需要两个正余弦分解器。

By means of the present model certain phenomena related to the nonlinear acoustic properties of an orifice, such as the roll-up of the shed vortex sheet and the forming of the Vena-Contracta are simulated. For a sinusoidal sound pressure, the time- history of the average velocity through the orifice is computed, and the nonlinear distortion of the velocity is examined by means of the Fourier decomposition.

依据此模型，对圆孔声学非线性效应的若干特征现象进行了数值模拟，如脱落涡层的卷曲，Vena收缩段的动态形成；在孔板前声压按余弦规律变化的情况下，计算了孔中平均速度的时间历程，并借助于Fourier分解分析了孔中平均速度的畸变情况。

This article introduced based on the Labview8.0hypothesized sine, the cosine, the square-wave, the saw-tooth wave,the triangle wave signal generating device realization May accordingto the need, the change profile frequency and the peak-to-peak value,preserves the profile the analysis parameter to assign the document,and introduced based on the USB data acquisition card dummy signaloutput LabVIEW,虚拟仪器,保存数据,信号发生器 LabVIEW, the hypothesized instrument, preserves the data, the signalgenerating device

本文介绍了基于Labview8.0的虚拟正弦，余弦，方波，锯齿波，三角波信号发生器的实现。可以根据需要，改变波形的频率和幅值，保存波形的分析参数到指定文件，并介绍了基于USB数据采集卡的虚拟信号输出。关键字：LabVIEW，虚拟仪器，保存数据，信号发生器问题补充：请不要直翻，中国式英语我不要。逐词翻译组成的句子我也会。我只要正确的翻译。不是正确回答不要打扰

At low bit rates,the Block Discrete Cosine Transform compression methods often give rise to blocking artifacts.

低比特率时，基于块离散余弦变换的图像压缩方法常常会引起块效应。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。