Common Reflection Surface stack is a brand-new and special ZO imaging method, the theory of CRS stack stems from paraxial ray theory, the biggest difference between CRS stack and conventional ZO imaging method is that it consider a reflector R as a circular reflector segment Cr placed in the vinicity of reflector R, Cr can be seen as the second order approximation of the reflector. The CRS traveltime surface is the multi-coverage reflection response of the reflector mirror assigned to R.
共反射面元（CommonReflection Surface=CRS）叠加技术是一种全新的、特殊的零偏移距剖面成像方法，CRS迭加理论源于傍轴射线理论，它与普通的零偏移距剖面成像方法的最大区别是它认为地下反射层是由许多个小反射弧段互相叠合组成的，认为来自某反射点附近的一个邻域内的反射信息都可以对该反射点的成像作出贡献，因此对该反射点进行零偏移距成像时就应该聚焦更多的能量参与迭加。
Pass to expati at e the characteristics of segment double circular arc gear, introducing the appl ication of segment double circular arc gear in turbine compressor, It presented that segment double circular arc gear in the high speed and large deeply turbi ne compressor was necessary.
通过阐述分阶式双圆弧齿轮传动特点，介绍了分阶式双圆弧齿轮在透平压缩机中的应用，说明在高速、型透平压缩机中采用分阶式双圆弧齿轮是必要的。
The use of logic switch plate 16 to enter a binary number, using seven-segment LED digital display control circuit board LED seven-segment display, circular display with the input binary number 16 corresponds to the four hexadecimal digits.
利用逻辑开关板输入一个十六位的二进制数，利用LED七段数码显示控制电路板的LED七段显示器，循环显示与所输入的十六位二进制数相对应的四位十六进制数。
Finally it analyzes the feasibility that using hydromechanics to analyze traffic flow by contrasting various characters between traffic flow and fluid flow. It analyzes influence of road alignment to basic expressway segment capacity by hydromechanics, and obtains viscous resistance and viscous movement differential equation when the vehicle drives on circular curve segment of expressway. And it infers that viscous resistance is correlated with sideway force coefficient, slope of crown and radius of circular curve. Radius of circular curve, sideway force coefficient and slope of crown are bigger, viscous resistance is smaller, the influence to capacity is smaller when the vehicle is running on nearside lane of circular curve; but radius of circular curve and sideway force coefficient are bigger, slope of crown is smaller, viscous resistance is smaller, the influence to capacity is smaller when the vehicle is running on fast lane of circular curve.
最后通过对比交通流与流体流的相似性，运用流体力学分析了道路线形对快速路基本路段通行能力的影响，求出了车辆在曲线路段的粘性阻力，建立了车辆在曲线路段的粘性运动微分方程，并由此推知，粘性阻力与横向力系数、路拱横坡度和圆曲线半径都有关系，当车辆在圆曲线外侧车道上行驶时，圆曲线半径、横向力系数和路拱横坡度越大，粘性阻力就越小，对道路的通行能力影响就越小；而当车辆在圆曲线内侧车道上行驶时，圆曲线半径和横向力系数越大，路拱横坡度越小，粘性阻力就越小，对道路的通行能力影响就越小。
Under the circumstance of identical boundary condition and initial condition, change respectively the contraction angle of conic segment of the cone-cylindrical exit typed nozzle, the length diameter ratio of cylindrical segment of nozzle exit and the diameter of nozzle exit, the numerical simulation and analysis were carried out on the speed attenuation characteristics of circular nozzle efflux by using the Fluent software.
在边界条件和初始条件相同的情况下，分别改变圆锥带圆柱出口型喷嘴的圆锥段收缩角、喷嘴出口圆柱段长径比、喷嘴出口直径，用Fluent软件对圆喷嘴射流的速度衰减特性进行数值模拟和分析。模拟发现：在圆锥段收缩角为13°左右、喷嘴出口圆柱段的长径比为3左右时，射流核心段上的速度最大；随着喷嘴出口直径的减小，射流核心段上的速度不断增大，射流的切割性能也越来越好。
To electroanalysising the cathode in the process undertakes volt-ampere scanning is analysed circular, affirmatory borate to cathode diffuse rate electroanalysises for control the important segment of the process.
对电解过程中阴极进行循环伏安扫描分析，确定硼酸盐向阴极的扩散速率为控制电解过程的重要环节。
The segment arrangement on circular curves has proven theoretical support; the segment arrangement on transition curves, however, has no theoretical support and is usually executed by means of VMT systems equipped on shield machines.
对于圆曲线的管片排版已有了相对较为成熟的理论，而缓和曲线上的管片排版以往通常是根据盾构机VMT来选择，没有成型的理论支持，为此，结合测量理论和弯环管片的实际，探索出在缓和曲线上准确选择弯环管片理论排版的方法。
The segment arrangement on circular curves has proven theoretical support; the segment arrangement on transition curves, however, has no theoretical support and is usually executed by means of VMT systems equipped on shield machines. On basis of the relevant survey theories and the actual conditions of the turning rings, the author probes into the segment arrangement on transition curves in the paper.
对于圆曲线的管片排版已有了相对较为成熟的理论，而缓和曲线上的管片排版以往通常是根据盾构机VMT来选择，没有成型的理论支持，为此，结合测量理论和弯环管片的实际，探索出在缓和曲线上准确选择弯环管片理论排版的方法。
The elements and methods of the line transect layingoff using the total setting station freely method of the total station from the straight segment to curve segment(easement curve and circular curve) are discussed, and the ways and means are introduced.
论述了从直线段到曲线段利用全站仪自由设站法测设线路横断面的原理，介绍了利用全站仪测设线路横断面的方法及步骤，实现了线路横断面测设的快速进行，为一体化作业打下了基础。
The mathematical model of basic rack with micro-segment profiles is set up at first. Then by using of the theory of gearing (equation of mesh), teeth profiles mathematical model for the non-circular gear with micro-segment profiles is obtained.
在建立具有微线段齿廓的基本齿条数学模型基础上，应用齿轮啮合原理（啮合方程），在齿轮坐标系中获得具有微线段齿廓的非圆齿轮齿廓曲线的数学模型。
Circular and Straight Line Segment Bill Board Design and Strength Calibration
圆弧及直线段广告牌的设计及强度校核
Two semi-circular lateral wings extend from the junction of C-shaped top and U-shaped wing, and there are two hooks at the end of the semi-circular lateral wings which are used to hook the root segment of transverse process.
两个半弧形的侧翼由C形顶端和U形翼的连接处上方向前上偏外侧伸出，其末端弯曲呈钩状为上钩，用以钩挂在病椎横突的根部。
ICO Global Communications System is one of the Global Mobile Personal Communications Systems, which consists of two parts: the space segment consists of 12 satellites operating on the intermediate circular orbits;
ICO全球通信系统是著名的全球个人移动通信系统（GMPCS）之一，它由空间段和地面段两部分组成；空间段由运行在中圆轨道上的12颗卫星组成；
The process parameters, including depth of cut (ap), feed rate (vf) and circular linear speed of the sawblade (v, ), varied over a relatively wide range during the experiments, while the segment surface being kept at a relatively stable state.
实验过程中在保持金刚石节块表面状态基本不变的情况下，对锯切深度ap、叫进给速度Vf和锯片圆周线速度Vs进行了较大范围的变化。
In this paper, a new method for constructing a segment of circular arc is presented by using the vector valued continued fractions, and the center and radius of this arc are given.
文章利用向量连分式构造的参数有理函数快速、简便地生成了平面上的一段圆弧，并给出了它的圆心坐标及半径。
Based on profound study of various position relations between a line segment and a circle, a simple and rapid clipping algorithm for circular window is presented in this paper.
通过对直线段相对圆的各种位置关系作深入的研究，提出了一种简单而迅速的圆形窗口裁剪算法。
This result is visualized and further compared with the results based on line segment and circular curve line error models.
以三次B样条曲线为例，给出了其建模及可视化结果，进一步地将该结果与折线及圆曲线的情况进行了比较。
The effect of ratio of width to thickness of the core unit on the mechanical behavior and energy-dissipation capacity of BRBs is also studied. A suggestion for design improvement that using circular transition at the junction between rectangle section segment and I crosssection unrestrained segment is proposed.
研究了新型防屈曲支撑约束屈服段宽厚比对其力学性能和耗能能力的影响，并提出在新型防屈曲支撑内核单元一字形与工字形截面的变截面处使用圆弧过渡的设计建议。
Wrap Profile Modification Using Symmetrical Circular Involute Plus Dual Line-Segment
采用对称圆渐开线加直线修正涡圈始端型线的研究
Teeth-profiles of non-circular gears with micro-segment profile and their graphic simulation
微线段齿廓的非圆齿轮齿廓曲线及其图形仿真