波点

Battista della Porta in 1589, but it was not until 1611 that Kepler compared a lens of glass to the lens in the eye and showed that rays from each point of an object were brought to a focus at each corresponding point of an image on the retina.?

要注意not until的用法。参考译文：1589年B？巴第思塔？德拉？波尔塔出版了有关透镜的打磨与磨光的书籍，但是直到1611年，凯朴乐才比较了玻璃透镜与人眼的水晶体，并发现来自物体各点的光线都能在视网膜成像上找到对应的点。

By analysis for form and growing of metal pitting corrosion, film breaking arouses pitting corrosion with stress producing.

通过对金属点蚀形成及发展过程的分析表明，点蚀是由膜破裂引起的，而伴随膜破裂过程必然会产生应力波一声发射。

First, wave amplitudes are obtained based on the equilibrium and continuity condition of the junction.

研究表明通过合理的选择激励梁、耦合梁和耦合点阻抗之间的匹配关系，可有效控制耦合点的纵向波传播。

By introducing a local correlation coefficients matrix, this algorithm cangive more accurate judgment between noise and useful signal.

改进算法结合了不同尺度以及同尺度不同分量中小波系数的相关性，通过一种构造局部相关性系数矩阵的方法获得对边界点和噪声点更精准的判断。

Based on such consideration, a strong texture description operator used in computer vision called local binary patterns is introduced. In this paper, the classic LBP method is enhanced from three aspects for facial expression recognition: image data, constructing feature way and the way of combining all extracted features.

基于以上几点考虑，本文引入了在图形学中具有很强描述纹理能力的局部二元模式(Local Binary Patterns，LBP)算法，改进了其中的三点对表情识别不利的因素：(1)将原图像经过小波包分解并在其它频率图像为零的情况下重构，得到了四幅与原图像大小相等的不同频率图像，在一定程度上增加了原图像的数据，改进了原算法数据量不足的问题。

The model experiment shows that Kirchhoff migration can implement effective image of converted phases, remove the fictious image, in contrast to ray_based horizontal common_converted_point stacking method.

模型检验表明，与传统的水平分层的共转换点偏移叠加方法相比，Kirchhoff偏移方法能够实现转换波的有效归位，消除水平分层共转换点偏移叠加造成的假象。

The model experiment shows that Kirchhoff migration can implement effective image of converted phases, remove the fictious image, in contrast to ray-based horizontal common-converted-point stacking method.

模型检验表明，与传统的水平分层的共转换点偏移迭加方法相比，Kirchhoff偏移方法能够实现转换波的有效归位，消除水平分层共转换点偏移迭加造成的假象。

This technique makes it possible to reproduce a three-dimensional stereo by getting fundamental matrix through matching pixels. But it is the most difficult problem to be solved completely.

本文对立体匹配的相关理论与算法进行了细致的研究，采用小波变换提取图像突变特征点的方法，并与传统采用的角点方法在性能上作了一些比较。

A single-pole HVDC system is simulated by using the PSCAD and MATLAB software,so the distance between inverter's bus and fault location is obtained.

用PSCAD(Power Systems Computer Aided Design)和Matlab软件进行了单极HVDC系统仿真分析，得到了发生故障后初始电流行波波头到达两侧的精确时间，进而得出了故障点到达逆变侧母线的距离。

The first step of this method is to remove the noises of image edge using wavelet modulus maximum's performance in multi-scale and Lipschitz exponent relation,and then adopts dynamic threshold,that is,former scale modulus image's mean modulus is used as next scale's modulus image threshold.Finally,this arithmetic is tested in image databases of cars.

一种改进的小波模极大值不变矩算法，首先利用小波模极大值在多尺度上的表现与Lipschitz指数的关系去除图像边缘的噪声点，然后采用动态确定阈值的方法，利用前一个尺度下模图像的平均模值作为后一个尺度下模图像的阈值，最后将此算法应用于汽车图像库。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。