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A measuring system which mainly consists of a high precision motorized translation stage of one dimension, POINT GREY Flea2-14S3 CCD camera and LED light source was designed and constructed. Based on a detailed analysis for experiment results, the periodic changing law of system error of LED facula centroid location in this measuring system was found. The results indicate that based on Flea2-14S3 CCD camera, the random error of facula centroid location is about 0.018 pixels, the system error is about 0.06 pixels, and the total error is about 0.063 pixels (1/15 pixels).

利用高精度一维电动平移台、POINT GREY Flea2-14S3 CCD 相机和LED 光源构建了测试系统，对测试结果进行研究和讨论，发现了测试系统LED 光斑质心定位系统误差的周期性变化规律，计算得到了基于Flea2-14S3 CCD 相机的光斑质心定位随机误差为0.018 pixels，系统误差为0.06 pixels，总体误差为0.063 pixels(约1/15 pixels)，能够应用于以光斑质心检测为手段的测量系统中。

A measuring system which mainly consists of a high precision motorized translation stage of one dimension, POINT GREY Flea2-14S3 CCD camera and LED light source was designed and constructed. Based on a detailed analysis for experiment results, the periodic changing law of system error of LED facula centroid location in this measuring system was found. The results indicate that based on Flea2-l4S3 CCD camera, the random error of facula centroid location is about 0.018 pixels, the system error is about 0.06 pixels, and the total error is about 0.063 pixels (1/15 pixels). According to the total error above, this CCD imager can be widely used in many measuring systems which count on facula centroid subpixel detection.

利用高精度一维电动平移台、POINT GREY Flea2-14S3 CCD相机和LED光源构建了测试系统，对测试结果进行研究和讨论，发现了测试系统LED光斑质心定位系统误差的周期性变化规律，计算得到了基于Flea2-14S3 CCD相机的光斑质心定位随机误差为0.018pixels，系统误差为0.06pixels，总体误差为0.063pixels（约1/15pixels），能够应用于以光斑质心检测为手段的测量系统中。

Based on the foundation of anatomizing the structure of robot, taking full advantage of parallel move performance of the double triangle boom of the rock-drilling robot ac-cording to the condition of the diversification of the boomend location brought by the change of each joint, integrating the knowledge of robot kinematics, an expert system is established to adopt the personate means, that is" the first toorientate the end, then to orientate the location "to realize the speediness orientation.

作者在分析凿岩机器人钻臂结构的基础上，利用钻臂的双三角支架的空间平移性能，根据各关节变化所引起的钻臂端部位姿的变化，综合机器人学中运动学知识，建立一个专家系统，采用拟人化的方案———"先定点，再定位姿"，解决凿岩臂的快速定位问题，以实现描述各关节位置的变量的快速逆运算。

Compared with the traditionalroot-locus method, the root-locus method proposed in this dissertation has thefollowing characters:1 The poles location is expressed by polar coordinates.2 The poles location is computed directly.3 The object includes the closed-loop systems and controllers.4 The influence of the parameters on the polar radius and angle can be studied mainly by differential operation.5 The relationship between the polar radius and angle can be studied mainly by differential operation.

与传统的根轨迹法相比，本论文中所采用的根轨迹法具有以下的特点：1 使用极坐标表示极点的位置2 直接计算闭环极点的分布3 研究对象包括闭环系统与控制器4 以微分运算为主要手段，研究了参量的变化对极点的极径和辐角的影响5 以微分运算为主要手段，研究了极点的极径与辐角间的关系本论文从研究Dahlin 控制器振铃现象的成因及消除方法出发，主要进行了以下方面的研究：运用根轨迹法对Dahlin 控制器进行了动态性能分析。

The core com ponents,including fault location com ponent,time controller,arriving time of directional travelling waves and fault location precision,are analyzed in detail.

就其核心部分——故障测距元件的构成、定时器控制量的选择、方向行波到达时刻的判定以及测量精度的考虑进行了全面的分析，指出了在实现距离测量元件、距离保护段和段中具体的技术关键，提出了有效的对策。

At its current location the house is two blocks from the home's original location and is owned and operated by the Pony Express Historical Association.

作为现有地址博物馆离原先地址有两个街区，现在由博尼快递历史盟会掌管经营。

Regulating the use of force when farming should be placed in first position handle adjustment to enhance the location of tools to enhance the height adjustment lever is located by the position location of the upgrade, only the use of power tools adjustment handle take-off and landing.

整体式液压系统就是把液压系统中的动力部分、控制部分和工作部分等液压元件，都安装在一个壳体内，组成一个液压系统的整体。

Furthermore, the effects of the location of TVC、the quantity and location of preheater are shown.

同时分析了平流流程喷射器位置、预热器位置和预热热量变化时对系统热力性能的影响。

"Pterosaur Huanjiang" Maybe this is, in a coincidence of time and, occasionally, the location of the incident due to an accidental intact down in hundreds of millions of years after the time of an accidental and fortuitous location, in a number of accidental behavior, so that a distant world the way through the fossil show in front of people.

"环江翼龙"也许就是这样的，在一个偶然的时间、偶然的地点，因一次偶然的事件完整地保存了下来，又在亿万年之后的一个偶然的时间、偶然的地点，在几个偶然的行为中，让一个遥远的世界通过化石的方式展现在人们的面前。

The company is located in Shanghai Pudong New Area, with excellent geographical location and traffic location.

公司地处上海浦东新区，具有优越的地理位置和交通位置。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。