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The principle of the novel single-phase hybrid active power filter is described in detail. Based on the above analysis, Kalman filtering approach for estimation of harmonics is presented to improve the speed and precision of harmonic detection, and it also can avoid the influence made by voltage distortion on harmonic detection. A new current control strategy based on energy balance is presented to regulate the active part absorbing or releasing active power and control the inverter to produce current opposite to the harmonic current reflowing in injection branch, the above method combined with harmonic current tracking control that keeps the stabilization of dc-side voltage and improve the reliability of the system.

并详细分析了系统的滤波原理，提出了基于卡尔曼增益自调整的改进型动态谐波含量估计方法，能够快速准确的跟踪检测电网谐波电流，并且克服了电力机车等冲击性负荷引起的电网电压畸变对谐波检测精度的影响；提出了基于逆变器两侧能量平衡的电流控制方法使有源部分吸收或释放一定有功或无功功率及产生与注入支路回灌谐波电流相反的抑制电流，然后联合电网谐波电流跟踪控制以获得系统参考信号，保证了直流侧电压的稳定，提高了装置可靠性，增强了系统滤波性能。

A novel method of measuring plus lens's focus is given, which is based on LCD, CCD, and digital image processing It is also a discussion on photoelectric method of automatically measuring parameters of an optic system In this method, a LCD is used as a reticle of the collimator, while the image on the accepting side is transformed into digital image and is sent into a computer The focus can finally be calculated out through digital image processing and analysis The method of measurement is introduce...

讨论了一种基于LCD、CCD和数字图像处理的正透镜焦距测量方法，是光电法自动化测量光学系统多个参数的一种有益的探讨。用液晶屏显示分划图形取代平行光管的分划板，用CCD在接收方采集数字图像并送入计算机，通过图像处理和分析得出被测透镜的焦距。运用叠加的方法提高图像的信噪比；结合重心法和平行线拟合方法求取平行线对的间距；应用高精度焦距标准透镜标定数字图像和实际像之间的比例关系。详细介绍了测量和图像处理的方法，进行了公式推导和误差分析，并给出了实验结果

Through detailed analysis of the concept and nature of the "megalopolis", this paper discusses the relationship and influence factors between change of the industrial and urban and township spatial structures of the Yangtze Delta Area and argues that: i the two highly modernized networks (infrastructure networks and the market and industrial organization networks) based on functional division of labor between individual cities possess crucial importance in facilitating change and upgrade of the industrial structure on one side and sustained optimization of the organizational pattern of the urban and township spatial structure on the other; ii in the light of the Yangtze Delta Area, influence factors in promoting positive corresponding states between change of the industrial structure and urban and township spatial structure are concerned with development level of the first place city, rational and orderly hierarchy of the urban and township system and, meanwhile, up-to-dateness of the city networks.

本文以长三角为研究地区，对产业结构演进与城镇空间结构的对应关系和影响要素进行了探讨。据此认为，基于城市功能定位和合理分工基础之上的高度现代化的两大网络（基础设施网络、市场体系和产业组织网络）是推进产业结构不断演进和升级的重要条件，也是推动城镇空间结构和组织模式持续优化的着力点和主要抓手；促进产业结构演进与城镇空间结构对应的影响要素主要包括：首位城市的发达程度、城市间合理和有序的层级关系、城市体系网络的现代化程度。

The assemblies, discussed on the preceding page and seen in the split-view drawing on this page, are to be installed on the supply side of a standard Chemtrol Ball Check Valve, replacing the union nut and end connector.

这种组件，正如上一页所讨论的，以及本页的剖视图内所见，是安装在标准Chemtrol球形止回阀的供应侧上，更换管接头螺母和端口连接件。

This paper gives a thoeretical analysis on the standard currently adopted in China for the widening of railway track gauge on curves, and points out that this atandard does not tally with the railway oparational actuality, the calculation data used are not in conformity to the present rolling stock conditions in this country and that the marginal radius and the amount prorided for the widening of curved track gauge are on the large side.

本文对我国现行曲线距轨加宽标准进行了理论分析，指出它脫离运营实际，而采用计算数据又不符合我国现有车辆情况，加宽起始半径和加宽值都偏大。提出在理论上比较切合实际的计算方法是车辆按力学自由內接条件计算；机车和少数固定轴距大的车辆，按最小运营半径条件检算，制订我国的曲线轨距加宽新标准。

I cannot help myself missing you, Roubao, my girl on the other coast of the damn Pecific which seperates us with the thousand-mile distance. I still remember the promices I made during the first days we fell in love with each other that I would be on the side you at any time you wanna see me and my shoulder would be in rare distance when you wanna rely on whether for sleeping, peace or tearing.

爱一个人，已经不是你好我好这么简单，意味着一种责任，一种承诺，然而这种承诺却远不是偶像剧里站着说话不腰疼的海誓山盟，大家都是凡人，都要吃饭，都要穿衣服，都要将来能够在世间立足，所有的事情都变得很现实，生活不只是风花雪月，更多的是柴米油盐。

The modular machine tool is used to tap 18 screw holes of M8 and M10 on the left, 15 screw holes of M8, M10, M12 on the right and three screw holes of Z1/4, a screw holes of G3/8 on the back surface. The modular machine tool uses the horizontal-type single location three-side processing plan, the processing and assembly technology capability is good, and it clamps conveniently.

同时采用机械滑台，一次装夹，对左面15个M8-7H深14和3个M10-7H深15的螺纹孔，右面7个M8-7H深14，3个M10-7H深15，5个M12-7H深20的螺纹孔以及后面3个Z1/4&-5H深20和1个G3/8&-5H深20的螺纹孔同时进行加工，不仅保证了孔的加工精度，而且还大大地提高了加工效率。

The modular machine tool is used to tap 18 screw holes of M8 and M10 on the left, 15 screw holes of M8, M10, M12 on the right and three screw holes of Z1/4%26rdquo;, a screw holes of G3/8 on the back surface. The modular machine tool uses the horizontal-type single location three-side processing plan, the processing and assembly technology capability is good, and it clamps conveniently.

同时采用机械滑台，一次装夹，对左面15个M8-7H深14和3个M10-7H深15的螺纹孔，右面7个M8-7H深14，3个M10-7H深15，5个M12-7H深20的螺纹孔以及后面3个Z1/4%26quot；-5H深20和1个G3/8%26quot；-5H深20的螺纹孔同时进行加工，不仅保证了孔的加工精度，而且还大大地提高了加工效率。

2 Take the tonometer in hand as it is shown on Figure 6 a: the thumb is placed on the side of the device's body, opposite to STOP button, the middle one - on STOP button, the forefinger - above the STOP button, third finger - below the STOP button, the tonometer's body being turned with its tip downwards.

按图6a所示手持眼压仪：拇指放在仪器主体侧面，与STOP按钮相对，中指-放在STOP按钮上，食指放在STOP按钮上方，无名指放在STOP下方，翻转仪器主体尖向下。

Yi Xi Meng-Tsan Chiang suspect but did not see the question should be thought of sneaking away to do tomorrow Cezhao Lian smiled, Li Xing Ji Zhuoche dream she dreamed that took her to a three-tier floor, where the first floor, second floor is male or female prisoners, prisoners, Li Xing Yi Xi into the floor with an office, there was a middle-aged man talking about inviting guests to his signature reimbursement vouchers, followed by his clothes and sheets led to the the middle of the room, easy evening standing on the stairs from time to time someone looked at her quietly saying something, so she was coming and going of people gaze down the stairs out the door and standing in the doorway waiting, I suddenly realized that she had been living in Plum Star on the second floor, he is a people who make mistakes, but she does not know how to do, and has been lingering for a long time There was no reply her, while the days are becoming more and more black, on the road and no street lights in the night she began to Road side of the walk, but forgot to when the direction of, even the car I do not know where the stop sign, she thought that the dark days will be a bus do?

易夕看孟灿怀疑但没在问便想到明天偷偷溜走的事侧着脸微笑着，梦里她梦见李子星骑着车带她去了一个三层楼的地方，一楼是女囚犯二楼是男囚犯，李子星带易夕走进二楼一间办公室，有位中年人让他签字说什么请客报销凭证，之后让他领着衣服被单去中间的屋子，易夕站在楼梯口不时有人看着她悄悄说着什么，于是她在来来往往的人群目光下了楼梯出了门站在门口等待着，忽然她意识到李子星已经住在二楼了，他已经是一个犯错误的人，而她却不知道怎么办，徘徊很久后一直没有人搭理她，而天却变得越来越黑，路上也没有路灯，黑夜中她开始向路一边走去，可是却忘记了来时的方向，连乘车站牌也不知在哪里，她想到这么黑的天会有公车吗？

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了