直线的

The results show that the force coefficient, the equivalent inductance and resistance are constant when the moving magnets oscillate in an operating region.

结果表明：推力系数在一定的动子行程内是基本恒定的，在上死点附近，推力系数有减小趋势；等效电感和电阻在一定的工作电流内是基本恒定的；直线电机等效电阻及电感的波动对活塞位移自传感器的输出几乎无影响，推力系数的波动影响活塞位移自传感器输出幅值的大小；若要提高直线压缩机活塞位移自传感器的输出精度，需要对模拟电路参数进行微调，以确保输出不失真，同时需要在活塞上死点附近对自传感器的输出进行修正。

Firstly,the cameras were calibrated high accurately,and the stereoscopic vision system model was established.Secondly,the 3D coordinates of the center of LED on the light-pen were achieved through matching the 2D images grabbed by the two cameras.Then,a series of the 3D coordinates of the center of LED were used for fitting straight line,and the 3D coordinates of the pen-points can be obtained from the line.

首先，对摄像机进行了高精度的标定，建立了双目立体视觉系统模型；其次，通过左右摄像机拍摄的二维图像，将两幅图像中的点进行匹配，获得光笔上的LED光斑中心三维坐标；然后，由一系列LED光斑中心的三维坐标拟合直线，从直线上得到笔尖的三维坐标。

The appearanee of halos and skins 15 usually identified by the abnormal inerease of total reaetion eross一seetions or by the narrow mo-- mentum distributions in the fragmentation of weakly bound nueleil一12}.xn order to manifcst the halo phe- nomenon elearly it 15 hope

结果表明，在所测量的角度范围内(6°-20°)，17O的这一依赖关系可以用一条直线很好地拟合，而17F的这一依赖关系需要两条不同斜率的直线才能拟合。17F数据拟合中的这种斜率改变可能起因于17F的奇异结构。

Motion synchronization between tool in X direction and principal axis rotation was controlled by electronic gearbox in cam turning. And profiling mechanism could be superseded by servo tool-holder. Linear motor direct drive servo tool-holder was designed, and host-slave control system with PC and DSP was developed for the require of high-speed and realtime servo. The technical process was analyzed in cam turning. Servo tool holder with tool swinging and principal axis variable rotate speed were presented to keep constant cutting angle and speed.

将电子齿轮箱用于凸轮车削加工系统的传动，以伺服刀架取代了传统加工的靠模装置，实现了刀具X方向直线运动与机床主轴转动的同步控制；设计了直线电机直接驱动的伺服刀架及基于PC与DSP构成的上—下位机控制结构，采用DSP进行实时控制以满足高速伺服需要；对凸轮加工过程的工艺特点与恒角度、恒速度车削进行研究，提出了具有刀具摆动功能的伺服刀架与机床主轴变转速运动方案。

The computational methods of line element conic curve s tangent point decided by any line on projective plane is presented on the basis of this study.

从实际计算的角度出发，使用N矢量表示视平面上的点和直线，并由线素二次曲线的射影定义推导出线素二次曲线的N矢量方程；在此基础上，给出了射影平面上任意一条直线所确定的线素二次曲线切点的N矢量的计算方法。

In this paper, the principle and hardware of test system are designed and the step motor's control software is designed at the same time. The assessing methods of linearity errors are analyzed and the test methods of linearity, diameter and roughness are provided and the corresponding softwares are programmed with VB. At last, the test method of roughness without touch-light scattering is proposed.

论文对检测系统的原理及硬件电路进行了设计，同时对步进电机的控制软件进行了详细的设计；对直线度误差的评定方法进行了分析，分别给出了炮膛内径的直线度、直径及阴阳膛表面粗糙度的测量方法，并用VB 编写了相应的控制软件，最后提出了一种炮膛粗糙度非接触测量法—光散射法。

Trivial Solution conception is put forwarded based on the theorem of K〓nig and forbidden node----for the n×n 0-1 degeneracy matrix, the solution under the condition that all element 1 can not be covered completely by n lines that must have intersects or can be covered completely by n lines that must have cross, without forbidden node, are called TS matrix.

本文在K〓nig定理和禁点定理的基础上，提出了平凡解的概念，即对于n×n阶的退化矩阵，全部1元素不可能被n条有交叉的直线全部覆盖或能用n条直线覆盖全部1元素，但无禁点的情况称为平凡解。并证明了如下的平凡解产生的充分必要条件：对退化矩阵A〓，若

Foshan Shunde sun glass machinery companies, are the production of glass deep-processing equipment for the modernization of the professional manufacturers, the company owns a number of highly qualified technical staff and management personnel; Over the years, the sun to the abundant technical force, insist continuous research and development, innovation and breakthrough philosophy, commitment to research and practical, combining domestic and foreign advanced technology to produce novel, unique, high precision glass deep-processing equipment; mainly include: Glass straight line edging machine, straight-line Beveling machine, 45 degrees straight edge machine, washing machine, drilling machine, special machines, both inside and outside the circular machine, 2500-type washing machine, bilateral straight edge machine, bilateral round machine series products to meet the demand for glass deep processing.

佛山市顺德区骄阳玻璃机械公司，是生产玻璃深加工设备的现代化专业厂家，公司拥有一批高素质的技术人员和管理人才；多年来，骄阳以雄厚的技术力量，坚持不断研究开发，创新突破的理念，矢志研究实用，结合国内外先进科技，生产出新颖、独特、精确度高的玻璃深加工设备；主要包括有：玻璃直线磨边机、直线斜边机、 45度直边机、清洗机、钻孔机、异形机、内外圆机、 2500 型清洗机、双边直边机、双边圆边机等系列产品，以满足各玻璃深加工的需求。

Foshan Shunde sun glass machinery companies, are the production of glass deep-processing equipment for the modernization of the professional manufacturers, the company owns a number of highly qualified technical staff and management personnel; Over the years, the sun to the abundant technical force, insist continuous research and development, innovation and breakthrough philosophy, commitment to research and practical, combining domestic and foreign advanced technology to produce novel, unique, high precision glass deep-processing equipment; mainly include: Glass straight line edging machine, straight-line Beveling Machine, 45 straight edge machine, washing machine, drilling hole machines, profiled machines, both inside and outside the circular machine, 2500-type washing machine, bilateral straight edge machine, bilateral circular edge machines, such as series of products to meet the demand for glass deep processing.

佛山市顺德区骄阳玻璃机械公司，是生产玻璃深加工设备的现代化专业厂家，公司拥有一批高素质的技术人员和管理人才；多年来，骄阳以雄厚的技术力量，坚持不断研究开发，创新突破的理念，矢志研究实用，结合国内外先进科技，生产出新颖、独特、精确度高的玻璃深加工设备；主要包括有：玻璃直线磨边机、直线斜边机、 45 直边机、清洗机、钻孔机、异形机、内外圆机、 2500 型清洗机、双边直边机、双边圆边机、等系列产品，以满足各玻璃深加工的需求。

Forequarters nThe shoulders are well laid back at an angle of approximately 45; a line drawn from the highest point of the shoulder blade to the forward point of articulation approximates a right angle with a line from the forward point of articulation to the point of the elbow.

完整的齿系最为理想。nn 颈部 n 颈部的长度与身躯比例恰当，结实而略拱，平顺地与肩部结合。nn 前躯 n 肩部向后倾斜，角度约45度；从肩胛最高点向前，到肩胛与前臂的结合点所形成的直线，与前臂从与肩胛结合点向下，延伸到肘部的直线，正好呈清晰的直角。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。