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Firstly, based on the sliding mode control and backstepping technique, a new attitude tracking controller is derived to control the attitude motion of spacecraft, the stability of the system is analyzed via Lyapunov method and the reaction wheel dynamics is also considered from the real applications point of view. The whole design process is divided into two steps: the first step is to use sliding control technique to design suppositional adaptive variable structure controller; and the second step is to design attitude tracking controller based on SMC and backstepping technique. Numerical simulations are performed to show that both tracking maneuver and vibration suppression can be accomplished effectively.

首先，采用自适应后步法结合主动振动控制技术设计了姿态跟踪鲁棒控制器，基于Lyapunov方法分析了系统的渐近稳定性；在此基础上，显性地考虑了执行机构动态特性问题，将整个设计过程分为两个步骤：第一步采用滑模控制技术设计了变结构虚拟控制器，给出自适应控制律的设计方法；第二步，将后步法与滑模控制技术相结合，设计了姿态跟踪鲁棒控制器，给出飞轮电压的输入算法及稳定性分析；最后，将提出的控制方法应用于挠性航天器的姿态跟踪控制，通过数值仿真对所提方法的可行性与有效性进行分析和验证。

From these simulation results, we analyze and discuss the influence of cavity boundary on Q factors of WG modes. Since there is scale size limitation due to diffraction limitation in microdisk, we also propose a novel design of photonic crystal circular-shaped (CD2) microcavity with well-sustained WG mode. We will apply the same optimization method on this microcavity named photonic crystal microflower CD2 (MFCD2) microcavity. And then this design is realized by a series fabrication processes and the measurement results will be analyzed and discussed.

由於微碟型共振腔在优化会有体积上的限制，故我们在这部分也提出一具有耳语廊模态之光子晶体修正共振腔，我们以相同的讨论结果作基础，将Q值最佳化的对象换成在小体积时也能有良好Q值表现的光子晶体，成为花型拓朴光子晶体共振腔(Photonic Crystal Micro-Flower CD2 Microcavity， PC MFCD2)，接著藉由制程方法实现该设计，并讨论其量测结果。

The popular simulation mode based on Web is used in this system. The simulation frame based on Web and C/M/S structure makes the system not only have the characteristics of distributabillty and openability, but also easy to connect to Intemet.

采用了当今流行的基于Web的仿真模式，确定了系统的三层客户机／服务器结构，使系统真正做到了完全分布式和开放式，并使系统很容易移植到Internet上。

Based on the experiment of twin-wire narrow gap welding in single pool mode by employing alternative pulsed arcs, the influences of welding parameters on the appearance of weld and welding process stability were investigated.

采用交替脉冲，对双丝共熔池窄间隙焊进行工艺试验，研究了焊接参数对焊缝成形和电弧稳定性的影响。

Research includes 3parts: preparation of data and creation of database, studies on the decision rule and mode of formula-syndrome as well as the trial on the sample formula.

研究内容包括三个部分：数据的准备与数据库的创建、方证判定规则与模式研究、样本方的判定试验。

Driver sets mode switch to "OFF", and pulls out master control key; waits for and until the indicator of "train reversal ready" flashes , presses "driverless reversal operation button" on the driver console, or else, leave the train and presses "driverless reversal operation button" on platform; train automatically drives to reversal tracks and backs to departure platform, car doors and platform screening doors are automatically opened, the driver moves into the driver cabin and inserts the key.

司机将模式开关设置为&OFF&位置，拔出主控钥匙；等待&列车折返准备好&指示灯点亮后，按压驾驶台上的&无人自动折返按钮&，或者离开列车，按压站台&无人折返按钮&；。列车自动运行到折返轨并回到发车站台，自动打开车门和站台屏蔽门，驾驶司机进入驾驶室，插入钥匙。

This text carried on first step to the B2C terrace mode of explain, through the research of the China network media case, carry on simple analysis currently to the problem faced by the B2C business model.

本文对B2C平台模式进行了初步的解释，通过研究华夏网络传媒案例，对目前B2C经营模式所面临的问题进行简单的分析。

This text carried on first step to the B2C terrace mode of explain, through the research of the China network media case, carry on simple analysis currently to the problem faced by the B2C business model.

本文对B2C平台模式进行了初步的解释，通过研究华夏网络传媒案例，对目前B2C经营模式所面临的问题进行简朴的分析。

By adopting mechanical driving mode, the machine can be used for perform injection with stable pressure on bone pork, beef and poultry. When the injection needle contacts the bone, the downward movement is stopped by the pneumatic spring to protect the needle. The air chamber pressure of pneumatic spring is adjustable in order to ensure no damage on the bone.

用途采用机械驱动方式可对猪肉、牛肉及禽肉等带骨肉以稳定的压力注射，注射针在遇到骨头等硬物后可自动在气弹簧的作用下停止向下运行，保护注射针，气弹簧的气室压力可调节，保证对原料中骨结构不破坏。

Based on the analysis of the present condition of manufacture Process Planning of various industries, This paper draws up a ploy to develop CAPPof rectangle spline broach which bases on Solidworks 2006 and Visual Basic6.0, and the function and the total structure and the mode of CAPP of rectangle spline broach.

在分析了目前多数企业工艺设计技术现状的基础上，制定了在Solidworks 2006和Visual Basic6.0环境下，开发矩形花键拉刀计算机辅助工艺系统的策略，拟定了矩形花键拉刀计算机辅助工艺系统的系统功能、总体结构及运行模式。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。