同心圆

Basic characteristics of cosine transform spectrum were analyzed, where contour lines of 2D cosine transform of point mass present the shape of a quarter of concentric circles and the number of counter become small along with the increasing of wave numbers. The spectrum of vertical rectangularcylinder put up periodic zero counters which mark off quadrate areas, the values of counter in each areas alternately change between the plus and the minus, and with the increasing of wave number, the values of counter present attenuation character alike e exponent.

分析了点质量和直立矩形柱体重力异常余弦变换谱的基本特征：点质量二维余弦变换谱等值线呈1/4同心圆形状，等值线随着波数的增大而变稀；直立矩形柱体谱出现了周期性变化的零等值线，该等值线将非零等值线划分为a×b个矩形区域，而且等值线值在各矩形型区域中正负交替变化，随着波数的增大，不同的矩型域中等值线值呈e指数衰减特征。

As the contour of a wheel rim is easier to detect than the contour of a wheel, and the contour of a wheel rim and the contour of a wheel are approximately concentric circles on the same plane, we first detect the contour of the wheel rim, the center of the wheel rim and the contacting point between the wheel and the ground, then we detect the contour of the wheel via the invariance of cross ratio under projective transformation.

由于提取钢圈轮廓比提取车轮橡胶轮廓容易，而且钢圈轮廓和车轮轮廓可以近似看作同一平面上的两个同心圆，所以在本文中，我们首先提取钢圈轮廓、钢圈圆心和车轮与地面接触点在图像上的投影，然后利用射影变换保持交比不变的性质求出车轮轮廓。

To improve the measuring precision of photoelectronic measurement system for curvature (important status parameter of cannon), a real-time distortion correction method with concentric circles as onsite standard is proposed and a set of measuring apparatus with self-center adaptation is designed.

为了提高光电测量系统对火炮重要静态参数——弯曲度的测量精度，提出了一种基于同心圆现场定标的实时畸变校正方法，并设计了一套自定中测量装置。

After the nasal cavities of the volunteers were decongested and topically anesthetized,the specially designed concentric needle electrode was inserted in the site of the TVP intranasally under the guidance of nasopharyngo scope.

在进行鼻腔粘膜收缩及表面麻醉后，经由鼻内窥镜介导下，将同心圆电极针置入TVP不同扎入点，嘱受试者进行一系列的空吞咽以及含水吞咽动作，选择9名受试者进行空吞咽与含水吞咽引发TVP收缩时EMG比较，记录所有吞咽时TVP的EMG波形。

Although it was only off by 2.2 micrometres, this badly blurred the telescope's vision and made the scientists who had promised the world new images and science in exchange for $1.5 billion of public money the butt of jokes.

格瑞尼在2008年说伽利略观测到的星图其实是叫做艾利斑的衍射图像，艾利斑是指一束光通过一个小孔时得到的同心圆图像，就像一束星光通过一个小孔时呈现的图像。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。