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Therefore, an explicit 3D differential migration algorithm based on a modified McClellan transform was proposed, which handles unequal sampling intervals in the inline and crossline directions and no resample is needed. The modified McClellan transformation matrix can directly image data from a square grid.

为此，提出了一种修正McClellan变换的三维显式差分偏移算法，即将插值嵌于外推算子中，无需对数据重采样，可以直接对矩形网格资料进行偏移成像。

Many are simply given directions to immigration process centres like the one at Croydon, South London. But only a few go.

有些人只是被告知移民局申请手续的程序，但很少人会按照被告知的那样去做。

The messages sent in both directions are enciphered random data, impossible to break individually, but now it is also not possible for the cryptanalyst to determine which three messages to attempt to correlate with one another, or at what starting points.

发出的两个方向是加密的随机数据，就不可能打破个别的，但现在它也不可能为cryptanalyst ，以决定哪三个信息，以试图与关联，又或在什么起点。

Experimental results indicate that silicon tips of octahedron and tetrahedron are fabricated with changing mask directions. The direction of mask does not affect the rapid etched crystal planes at the fixed solution concentration and temperature.

实验结果表明：当腐蚀溶液浓度和温度一定时，正方形掩模的方向并不影响快腐蚀晶面的类型，利用正方形掩模的偏转，可以制备出八面体和四面体的硅尖。

Key figure in the finish with the key switch between nine key directions, Power icon in a square adjacent to the keyboard icon to direct current state:the current figure is crucial if Green is the color icon, the icon is a crucial nine direction is a yellowish color.

关键人物完成的关键九年之间切换的主要方向，电源图标方形邻近键盘图标直接现状：目前的数字是至关重要的，如果是绿色的彩色图标，图标是一个重要方向是9黄颜色。

This study investigated the effects of different platform motion directions (static, heave, roll, pitch and random) and cursor movement angles (0°, 45°, 135°, 180°, 225°, 270° and 315°) on manipulating three different kinds of trackballs to conduct the point-and-click task.

本研究主要探讨船舰载台不同的运动模式（静态、上下起伏、左右摇摆、前后俯仰与随机运动）与平面游标移动角度(0°， 45°， 90°， 135°， 180°， 225°， 270° and 315°)对使用三种不同轨迹球的影响。

Principal curvatures and principal directions are obtained by computing in closed form the eigenvalues and eigenvectors of certain 3×3 symmetric matrices defined by integral formulas, and closely related to the matrix representation of the tensor of curvature.

通过计算3×3对称矩阵的特征值和特征向量可以得出主曲率和主方向，而该对称矩阵是由积分公式定义并且与曲率张量的矩阵表达密切相关。

We propose a unified method to approximate important geometric attributes, including normal vector, gauss curvature, mean curvature, principal curvatures and principal directions on point sampled surface. Based on MLS projection our method is robust to noise and stable to the sampling density.

曲面的微分性质包括法向量和切平面、高斯曲率、平均曲率、主曲率和主方向，在计算机图形学、机器视觉和计算机辅助设计等领域发挥了重要的作用，比如曲面绘制、内外测试、曲面重建、曲面简化、去除曲面噪声和模型分割等。

The hybrid grid system of natural water bodies are in orthogonal body-fitted curvilinear coordinates in horizontal directions, and in Cartesians coordinate in the vertical direction.

天然水域的混合网格系统，在水平方向上是正交贴体坐标系；在垂直方向上则是笛卡尔坐标系。

There were a few people about, two shuffling through the rain in opposite directions and one sitting on the shallow porch of a boarded-up cut-rate law office, reading a wet newspaper and whistling.

附近人不多，有两个人向着不同的方向在雨中漫步，有一个人坐在旁边那个二流律师事务所的门口，一边读着一张被雨淋湿的报纸，一边吹口哨。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失