圆的

In the CVB-PIV system,the image of astatic particle reflection is a circle,whose center represents the in-plane position of the particle andradius is equal to the displacement of bias related to the out-plane position of the particle.

同时，通过CVB-PIV对单个或多个粒子的静止、直线运动、摆动和圆周运动的研究，以及对平面镜角速度等参数对于粒子影像的影响和粒子面外位置与粒子影像偏移量对应关系的探讨表明，静止粒子的影像是一个圆，圆心坐标与粒子的面内位置相对应，圆的半径就是粒子影像的偏移量，与粒子的面外位置一一对应。

Microscope and image analysis technique are adopted in 《JB/T 7990-1998》. The "grain size" tested by microscope is expressed by the "largest breadth" of the grain image. When the grain size is tested by image analysis instrument, the grain size is expressed by the diameter of a circle whose area equals the grain image's.

JB/T7990-1998》规定用图像分析仪或显微镜测量粒度，显微镜法测量的"粒度"是以颗粒投影的"最大宽度"来表征的，而用图像分析仪测量的"粒度"指的是"等面积圆直径"，即，用与颗粒投影面积相等的圆的直径表征颗粒粒度。

Tooth Proportions.—There are 17 pitches: 2.5/5, 3/6, 4/8, 5/10, 6/12, 8/16, 10/20, 12/24, 16/32, 20/40, 24/48, 32/64, 40/80, 48/96, 64/128, 80/160, and 128/256. The numerator in this fractional designation is known as the diametral pitch and controls the pitch diameter; the denominator, which is always double the numerator, is known as the stub pitch and controls the tooth depth. For convenience in calculation, only the numerator is used in the formulas given and is designated as P. Diametral pitch, as in gears, means the number of teeth per inch of pitch diameter.

齿比——一共有17种齿比：2.5/5，3/6，4/8，5/10，6/12，8/16，10/20，12/24，16/32，20/40，24/48，32/64，40/80，48/96，64/128，80/160和128/256在这一系列的分数中的分子是径节，径节的大小决定了节圆的直径；而分数中的分母通常是分子的两倍，分母是残余径节，它的作用是控制齿槽的深度为了方便计算，在所有的公式中都使用分子作为计算参数，并且与齿轮的表示方式一样定义为径节P尺寸，也就是在节圆上，每英寸长度上的齿数

Secondly, in this part, we will introduce the notation of average geodesic curvature for curves in the hyperbolic plane, and investigate the relationship between the embeddedness of the curve and its average geodesic curvature. Finally, we will employ the Minkowskis support function to construct a new kind of non-circular smooth constant breadth curves in order to attack some open problems on the constant width curves for example, whether there is a non-circular polynomial curve of constant width, etc.

其次，对双曲平面上的曲线引入平均测地曲率的概念，并讨论双曲平面上凸曲线的嵌入性与它的平均测地曲率之间的关系，其目的是为了将双曲平面上曲线的性质与欧氏平面中曲线的性质作一些对比；最后，我们利用Minkowski支撑函数构造了一类新的非圆的光滑常宽曲线，其目的是想回答有关常宽曲线的一些未解决问题如是否存在非圆的多项式常宽曲线？

Here, we will give an independent proof of the existence for inequality (2.1.3), and by the way, give an estimate on the width of the bi-enclosing annulus of closed convex curves in the plane. Secondly, in this part, we will introduce the notation of average geodesic curvature for curves in the hyperbolic plane, and investigate the relationship between the embeddedness of the curve and its average geodesic curvature.

其次，对双曲平面上的曲线引入平均测地曲率的概念，并讨论双曲平面上凸曲线的嵌入性与它的平均测地曲率之间的关系，其目的是为了将双曲平(来源：ABC论84文网www.abclunwen.com)面上曲线的性质与欧氏平面中曲线的性质作一些对比；最后，我们利用Minkowski支撑函数构造了一类新的非圆的光滑常宽曲线，其目的是想回答有关常宽曲线的一些未解决问题如是否存在非圆的多项式常宽曲线？

Willow has green garb of bright yellow, and poplar leaves still have not won, as early as next door to wait for the ladies, and she was always nagging in the poplar leaf round when his grandson take-home outside, so that this new life Lulu small wind began to enjoy the warm spring outdoor world.

柳树已经遍身披着嫩黄色的绿了，杨树的叶依然还没有圆，隔壁的大婶早在等待了，她总是唠叨要在杨树叶圆的时候，把自己的小孙子抱到户外，让这个新的小生命露露风，开始享受春日的暖洋洋的户外世界。

August Moon Festival is a Chinese traditional festival, it also became one of the major festivals in China. People see the full moon as a symbol of reunion, and August 15 as a date for family reunion. When I was in China, our family gathered to have mooncakes and enjoy the moon. Every August Moon Festival, the moon is the roundest. On the moon, there are rabbits and Chang Er. In my heart, the moon that day is the brightest.

中秋节是我国的传统佳节，也是我国成为一年之中的重大的节日，人们把月圆当作团圆的象征，把八月十五作为亲人团聚的日子，我在中国过中秋节，吃月饼一家人团聚看月亮每年中秋节晚上月亮最圆的一天，月亮上面有兔子嫦蛾桂花树在我心目中月亮最亮的这一天晚上。

Considering that oilcans, the major part of oil storeroom object, show circular figure with higher grayness, this research adopted Sobel operator to detect the edge of images; then located the circles which have definite size through hough transform; finally, the areas of oil storm were found out and their positions were accurately located based on the circles' space distribution and their quantitative relationships.

鉴于油库目标的主要组成部分——油罐在遥感图像中呈灰度较高的圆形的特点；本文首先对遥感图像采用sobel算子提取图像边缘信息，然后利用边缘信息和改进hough变换提取图像中限定大小的圆的位置，最后再根据图像中提取出的圆的空间分布和数量关系找出油库区域并对其进行精确定位。

The houses of the Munchkins were odd-looking dwellings, for each was round, with a big dome for a roof. All were painted blue, for in this country of the East blue was the favorite color.

芒奇金人的屋子，都是样式奇怪的建筑物，每一幢是圆的，盖着一个大的圆屋顶，完全漆着蓝色，因为在这东方的国度里，蓝色是大家喜爱的色彩。

The CL data file can be converted to NC code with NC post module of Pro/E, which can shorten design cycle of tricone rock bit, improve design quality and enhance the competitive capacity and innovative ability of enterprises.

在Pro/Engineer环境下首先由软件建立钻头牙轮的三维实体，然后应用Pro/NC模块完成了牙轮内圆孔的粗、精NC加工，生成了CL刀具路径数据；完成了牙轮外圆的粗、精NC加工，生成了CL刀具路径数据，同时完成了对粗、精加工两个序列的合并；通过本研究产生的CL文件经过NC post模块可生成数控机床的控制代码，从而可以缩短三牙轮钻头的设计制造周期，提高产品的设计质量，提高企业的技术创新能力和市场竞争能力。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。