像线的

In the spatial domain,canonical projection of the Wigner distribution function of the associated pupil function to show the insensitivity of the point spread function to the defocus-related aberrations is mainly used,and in the frequency domain,it is shown that the optical transfer function of such a system is also insens.

空域中，主要利用维格纳分布函数的正则投影来分析系统的点扩展函数对离焦像差的变化不敏感特性；频域中，则利用考纽螺线的图解方法来分析系统的光学传递函数对离焦像差的变化不敏感特性。

In the spatial domain, canonical projection of the Wigner distribution function of the associated pupil function to show the insensitivity of the system's point spread function to the defocus-related aberrations is mainly used, and in the frequency domain, it is shown that the optical transfer function of such a system is also insensitive to misfocus through a geometrical description of the so-called Cornu spiral.

空域中，主要利用维格纳分布函数的正则投影来分析系统的点扩展函数对离焦像差的变化不敏感特性；频域中，则利用考纽螺线的图解方法来分析系统的光学传递函数对离焦像差的变化不敏感特性。

A sheath fold looks like a scabbard or human's tongue. Its fold axial plane or flatten ed plane is parallel to the foliation and there is strong stretching lineation on the sheath fold.

鞘褶皱看起来像一把鞘或是像人的舌头，它的褶皱轴面或压扁面是平行岩石中的片理面的，鞘褶皱上有强烈的拉伸线理。

This paper deals with the partial capacitance calculation of the high voltage transmission line for the neutral beam injectors.

该文研究了中性束注入系统中高压传输线部分电容的求解问题；根据传输线多层同轴导电壳的结构特点，利用多重镜像法确定与平行导线相应的一系列的镜像线电荷，求解的问题变为由一系列平行线电荷构成的电场问题，传输线的部分电容则通过各导体间的电位系数来求得；这一方法避免了直接求解的困难以及大量数值计算等问题。

As the projector can conceptually be regarded as camera acting in reverse, the relation between projection plane of the projector and imaging plane of the camera is fixed.

进而， 利用投影仪的投射过程是摄像机成像过程的逆过程，建立投影仪的投射平面和摄像机的成像平面的对应关系，将"极线几何约束"应用到基于条纹投影的主动三维视觉的姿态估计问题，并在考虑测量数据受噪声影响的条件下，建立了求解视点姿态参量的数学模型。

When the ground was partially bare of snow, and a few warm days had dried its surface somewhat, it was pleasant to compare the first tender signs of the infant year just peeping forth with the stately beauty of the withered vegetation which had withstood the winter —— life-everlasting, goldenrods, pinweeds, and graceful wild grasses, more obvious and interesting frequently than in summer even, as if their beauty was not ripe till then; even cotton-grass,cat-tails, mulleins, johnswort, hard-hack, meadow-sweet, and other strong-stemmed plants, those unexhausted granaries which entertain the earliest birds —— decent weeds, at least, which widowed Nature wears.

土地上有一部分已没有了积雪，一连几个温暖的日子把它的表面晒得相当的干燥了，这时的赏心悦目之事是用这新生之年的婴孩期中各种初生的柔和的现象，来同那些熬过了冬天的一些苍老的植物的高尚的美比较，——长生草，黄色紫苑，针刺草和别种高雅的野草，往往在这时比它们在夏季里更加鲜明，更加有味，好像它们的美非得熬过了冬才到达成熟时期似的：甚至棉花草，猫尾草，毛蕊花，狗尾草，绣线草，草原细草，以及其他有强壮草茎的植物，这些都是早春的飞鸟之无穷的谷仓，——至少是像像样样的杂草，它们是大自然过冬的点缀。

In this cold season, the white shock of the wind like a big mad wizard, pulling and pushing of days ran back and forth, it will corner of the paper, roll the leaves into the air, like flying off the line like Gone with the Wind Gone with the Wind flying up and down shake.

在这个寒冷的季节里，乳白色的风像惊狂了的大精灵，扯天扯地的奔来跑去，它将墙角的纸屑、树叶卷到空中，像断了线的风筝似的飘飘摇摇的上下乱飞。

A stereo pair of SPOT-5 imagery acquired in across-track mode is selected and used. The empirical results have shown that the proposed geometric model, compared with the original model which considers the CCD line-scanner side watch angle as a constant, can improve the x-coordinate accuracy of image points, and can also raise the height accuracy of object space coordinates significantly while maintain the same level of the planimetric accuracy.

经对一SPOT-5异轨立体像对的试验表明，利用改进的几何模型和视CCD线阵列侧视角为常数的仿射变换模型对立体影像进行几何处理，前者较后者的像点x坐标精度有一定的改善，物点的高程精度有所提高，平面精度两者基本一致。

Objective To measure the activity degree of gastric cancer by X-ray barium perspective and judge the feasibility of excision.Methods Take the height of a centrum and a clearance between two centrums as a standard metrical unit.Separate the168cases into nether gastric cancers and upper gastric cancers.Measure the posi-tions of gastric cancers in standing location image and lying location image,take the difference between the two posi-tions as the activity degree.

目的 应用X线钡餐造影，测量胃癌病灶的活动度，判断胃癌能否手术切除方法把患者的椎体及其以下椎体间隙的高度作测量的标准单位，将168例胃癌分为以贲门及胃底为主的上部和以幽门及胃窦为主的下部，分别测量胃癌病灶在立位像和卧位像上的位置，求出两者之间的差别，作为胃癌病灶的活动度。

Phase unwrapping algorithm based on edge detection is suitable to well separated fringes, the unwrapped phase can be rewrapped to the original phase map, which shows the result is correct.

4对于低噪声情况下或滤波后的干涉条纹图，在基于边缘检测的相位解缠过程中，利用Snake模型可以高效准确的实现边缘点的连接，所连接的边缘线与干涉条纹很好的吻合，可将连线的精度控制在三个像元。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。