直线运动

Introduces a type of special honer repairing hydraulic support cylinder using coal mine and other mine,main discuss its composing of hydraulic system,working principle,technics process,electrical control system and relation about each other lock moment,beeline move forword timing method,and its characteristic, attainability purpose using this machine.

介绍了一种用于煤矿或其他矿山的单体液压支柱维修专用珩磨机，重点讨论了该机的液压系统组成、工作原理、工艺过程、电气控制系统、运动互锁关系、直线进给调速方法以及特点，采用该机可达到的目的。

The stifle joints must point in the line of travel, not outward resulting in a bowlegged appearance nor hitching in under the dog.

从前面看，从肩关节到肉趾的骨骼线条在运动时能保持一条直线。

People and things, static or dynamic, in effect, have long been brought into the center of a circle, and everybody or everything can only make a curvy movement along a seemingly direct line.

无论是静态或动态式的人或物，其实早已被某圆心所规划，最后只能在看似一条直线的路上在做一个曲线运动。

Chapter 1 briefs the relation between invariance and computer vision and summarizes the research and application of invariance in computer vision. Chapter 2 first derives the transformations of three camera models, then makes the correpondences between the models and three typical geometrical transformation groups by analysing the transformations respectively. The correspondences supply the theoretical basis for applying geometrical invariants to resolve the problems of computer vision. In Chapter 3, we describe the geometrical invariant theory and prove some geometrical invariants of coplanar points, lines or conics by algebraic method. In order to use the invariants of conic pairs to describe general 2D shapes, we discuss the perspectively invariant representation of planar curves using conies in detail. A system consisted of two TMS320C25 and based on moment invariants is introduced in Chapter 5. The system can recognize more than 30 different shapes of object model or more than 10 plane models with similar shape in real time.

第一章简述了不变性与计算机视觉的关系，以及计算机视觉中的不变性研究和应用概况；第二章推导了计算机视觉中常用三种投影模型的变换关系，通过对这三种变换关系的分析，分别建立了这三种投影模型和几何学中的三种变换群之间的一一对应关系，为几何不变性在计算机视觉中的应用提供了理论基础；在第三章中，我们介绍了几何不变性的理论，并且用代数方法证明了共面点、直线、二次曲线的几何不变量和射影不变量；为了把二次曲线的不变量用于一般二维形状描述，在第四章中我们详细地讨论了用二次曲线实现一般平面曲线的透视不变性表示的方法；第五章介绍了用两片TMS320C25构成的、基于不变矩形特征的运动目标实时识别系统。

In Coulomb's Law, the force exerted on one charged particle by another is directed along the line connecting the two particles, and, away from the other particle if both particles have the same kind of charge (both positive, or, both negative) but, toward the other particle if the kind of charge differs (one positive and the other negative).

牛顿第二运动定律公式如下：。。。。在库伦定律中，由一个带电粒子所施加在另一个粒子上的力沿著连接两粒子的一条直线，如果两个粒子有同样的电荷则此力为排斥力，如果两个粒子有同样的电荷，则为吸引力。

A new way of exchange between rotation and reciprocating motion through planetary driving was introduced, which was different from the one realized by piton pump moving with cam, brace and link.

采用行星齿轮传动方式实现从旋转到直线的往复运动，不同于现有柱塞泵由凸轮、曲柄连杆或斜盘实现往复运动的方式，没有滑靴等高压力作用下高速滑移的元件。

Based on the motion model of mobile robot, the NXT motion control was divided into two parts: linear movement and turning.

以移动机器人的运动模型为基础，将NXT移动机器人运动控制分为直线跟踪和转弯两部分。

Special designed drive outfit and PLC are adopted to control object moving to-and-fro and rotating at prearranged positions.

采用特殊设计的传动机构结合PLC控制物体作直线往复运动和在预定位置作自转运动。

In this paper the size of the crank-slider mechanism is synthesized,and the point location is correctly selected for the six-bar linkage mechanism.

对于这种轨迹串联的组合机构，由于后一基本机构的运动，取决于前一基本机构中从动件的轨迹，要求连杆上M点作一过从动件的固定铰接点D的一段直线，从而使构件DM可以作间隙的旋转运动。

When random vibration theorization is applied to research for the guiding accuracy of LMRG system, a new algorithm (Cutting off tail—Romberg) is invented.

本文运用一般随机振动理论和蒙特卡罗法对滚动直线导轨副的运动精度和误差均化作用进行了研究，并且运动精度的实验结果具有一定的应用价值。

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。