查询词典 two or three

Each of the selected pieces requires only one or two techniques, and even scales, arpeggio or stretches are set within three octaves. Besides, the length doesn't exceed three measures, which makes it suitable for children under development.

这些作品每一首都只包含一至二项技巧，若有音阶与琶音，跨距都在三个八度以内，长度也不超过三小节，适合钢琴弹奏技巧尚在发展中的儿童。

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。

The forward kinematics is analyzed by choosing one of the mechanisms which have one, two,three or zero angle constraint.Wherein,3-CCC is a new parallel mechanism which has three angle constraints and three distance constraints, Calay\'s formular and direction cosine matrix are used to describe the rotation matrix respectively.By setting Dixon\'s and Sylvester\'s resultant with the three angle constraint equations respectively and using parameters replacement to deal with the distance constraint equations,the 64 order input-output equation of the forward kinematics is obtained under both of the methods.Numerical example confirms these theretical results and the motion simulation is shown in VC++ by integrating OpenGL.

3对高小山提出的广义并联机构进行了研究，以其中具有角度约束的并联机构进行了分析，选取具有一个、两个、三个和零个角度约束类型中各一个机构进行了运动学正解求解，其中3-CCC是一种全部由圆柱副构成的具有三个线线角度和三个距离约束的新型并联机构，文中分别用Calay公式和方向余弦两种旋转矩阵建模方法对其位置正解进行了分析，通过对三个角度约束方程分别构造Dixon结式和Sylvester结式，以及对三个距离约束方程进行变量代换分别导出了位置正解输入输(来源：4040ABC论文网www.abclunwen.com)出方程，得出64组位置正解，并使用数值算例验证了其全部根。

Five novel torsion-mirror optical actuators including double-beam thickness differential structure with single torsional axis, double flexible folded-beam structure with single torsional axis, double-beam vertical torsion comb structure with single torsion axis, four-beam differential compound-micromirror structure with double torsional axis and the combined structure of the four basis forms above, are brought forward. All of these devices could be fabricated by the same silicon micromachining process we have developed. The deformation compensation design with local enhancement for the thin torsional beam which is the key structure of these devices is also put forward to improve the reliability. The three-dimension solid model and two-dimension reduced order model of the torsion-mirror optical actuator are established and then the numerical simulations for evaluating the device characteristics of the statics, dynamics, electrostatic field, mechanical and electrostatic coupling, fluid and solid coupling are carried out to optimize the structure design. Furthermore, three optical fibre clamping structures which could be integrated monolithicly are designed and analyzed to improve the optical coupling capability. 4. Three flexible process flows combined with bulk silicon micromachining and surface silicon micromachining are brought forward to fabricate these novel single-crystal silicon or polysilicon torsion-mirror optical actuators by using the same lithography masks for both SOI wafer and regular silicon wafer. A series of important process experiments are carried out to optimize the process parameters and the process flows. Some novel and typical process phenomena which occurred during the microfabrication are analyzed and then the corresponding solutions are put forward. 5. A MEMS dynamic testing system which exploit blur image synthetic technique, stroboscopic image matching technique, stroboscopic mirau microscopic interferometry technique and microscopic laser dopper vibrometer technique is set up to measure three-dimension and six-freedom micro motions of any MEMS devices with nanometer resolution.

在对硅微机械扭转镜光致动器的光机电特性系统地理论研究的基础上提出了硅微机械扭转镜光致动器的结构设计准则。3、提出了单轴双梁厚度差分结构、单轴双柔性折叠梁结构、单轴双梁垂直扭转梳齿结构、双轴四梁差动复合微镜结构以及以上四种基本结构组合后的衍生结构等五种工艺加工技术兼容的新型的硅微机械扭转镜光致动器，对器件关键结构薄厚度、高耐疲劳扭转梁进行了局部加强的变形补偿设计，建立了器件的三维实体模型以及两维降阶模型，对提出的新结构硅微机械扭转镜光致动器进行了系统的静力学、动力学、静电场、力电耦合和流体固体耦合的建模仿真与优化设计，同时设计并分析了三种可实现单芯片集成的弹性光纤定位夹紧结构。4、提出了组合体硅微加工技术与表面硅微加工技术、兼容同一套光刻版图、可分别基于SOI 晶片和普通Si 晶片、适应于制造提出的各种新结构单晶硅和多晶硅硅微机械扭转镜光致动器的三套柔性加工工艺流程，开展了一系列重要工艺步骤的单项工艺试验，对工艺流程与工艺参数进行了优化，针对加工过程中出现的具有普遍意义的典型工艺问题进行了讨论和分析，并提出了解决方法。5、创新性地将模糊图像合成技术、频闪图像匹配技术、频闪Mirau 显微干涉技术与显微激光多普勒测振技术有机结合，建立起了一套周期运动测量与瞬态运动测量相结合、单点运动测量与全视场运动测量相结合、满足不同MEMS 器件各种动态测试要求的集成的MEMS 三维六自由度微运动精密测量系统。

Time however, and the Satisfaction I had, that I was in no Danger of being discover'd by these People, began to wear off my Uneasiness about them; and I began to live just in the same compos'd Manner as before; only with this Difference, that I used more Caution, and kept my Eyes more about me than I did before, least I should happen to be seen by any of them; and particularly, I was more cautious of firing my Gun, least any of them being on the Island, should happen to hear of it; and it was therefore a very good Providence to me, that I had furnish'd my self with a tame Breed of Goats, that I needed not hunt any more about the Woods, or shoot at them; and if I did catch any of them after this, it was by Traps, and Snares, as I had done before; so that for two Years after this, I believe I never fir'd my Gun once off, though I never went out without it; and which was more, as I had sav'd three Pistols out of the Ship, I always carry'd them out with me, or at least two of them, sticking them in my Goat-skin Belt; also I furbish'd up one of the great Cutlashes, that I had out of the Ship, and made me a Belt to put it on also; so that I was now a most formidable Fellow to look at, when I went abroad, if you add to the former Description of my self, the Particular of two Pistols, and a great broad Sword, hanging at my Side in a Belt, but without a Scabbard.

可是，尽管如此，时间一久，我对食人生番的担心逐渐消失了，更何况我确信自己没有被他们发现的危险。所以，我又像以前那样泰然自若地过平生活了。所不同的是，我比以前更小心了，比以前更留心观察，唯恐被上岛的野人看见。特别是，我使用枪时更小心谨慎，以免给上岛的野人听到枪声。天幸我早就驯养了一群山羊，现在就再也不必到树林里去打猎了。这就是说，我用不着开枪了。后来，我也捉过一两只野山羊，但用的都是老办法，即用捕机和陷阱捉到的。因此，此后两年中，我记得我没有开过一次枪，虽然每次出门时还总是带着的。此外，我曾从破船上弄到三把手枪，每次出门，我总至少带上两把，挂在腰间的羊皮皮带上。我又把从船上拿下来的一把大腰刀磨快，系了一条带子挂在腰间。这样，我出门时，样子实在令人可怕。除了前面我描述过的那些装束外，又添了两支手枪和一把没有刀鞘的腰刀，挂在腰间的一条皮带上。

C Supports both Firmware Hub and LPC Memory Read and Write Cycles Auto-detection of FWH and LPC Memory Cycles C Can Be Used as FWH for Intel 8xx, E7xxx, and E8xxx Series Chipsets C Can Be Used as LPC Flash for Non-Intel Chipsets Flexible, Optimized Sectoring for BIOS Applications C 16-Kbyte Top Boot Sector, Two 8-Kbyte Sectors, One 32-Kbyte Sector, Three 64-Kbyte Sectors C Or Memory Array Can Be Divided Into Four Uniform 64-Kbyte Sectors for Erasing Two Configurable Interfaces C FWH/LPC Interface for In-System Operation C Address/Address Multiplexed Interface for Programming during Manufacturing FWH/LPC Interface C Operates with the 33 MHz PCI Bus Clock C 5-signal Communication Interface Supporting Byte Reads and Writes C Two Hardware Write Protect Pins: TBL for Top Boot Sector and WP for All Other Sectors C Five General-purpose Input Pins for System Design Flexibility C Identification Pins for Multiple Device Selection C Sector Locking Registers for Individual Sector Read and Write Protection A/A Mux Interface C 11-pin Multiplexed Address and 8-pin Data Interface C Facilitates Fast In-System or Out-of-System Programming Single Voltage Operation C 3.0V to 3.6V Supply Voltage for Read and Write Operations Industry-Standard Package Options C 32-lead PLCC C 40-lead TSOP

0第0页，本页显示记录0-0，共0条记录分0页显示C支持两种固件中心和LPC内存读取和写入周期自动的FWH和LPC的记忆圈C检测可以用于英特尔8xx系列，E7xxx，E8xxx系列芯片组和C可以用作FWH与至于非英特尔芯片组的BIOS应用柔性优化扇区开放16字节热门引导扇区，两个8 - Kbyte的，一个32字节部门，3个64 - Kbyte的C或存储阵列，线性预测编码闪光可分为四个统一为两个可配置的接口擦除的FWH / LPC接口为64 - Kbyte的行业，系统运行C地址/地址多路复用在制造过程中用于编程接口的FWH /线性预测编码界面C与33 MHz的PCI总线时钟 5信号通信接口进行操作，支持字节读取和写入引导扇区的顶部和WP C两硬件写保护引脚：任务型为所有其他部门 5个通用输入的系统设计的灵活性识别的多种设备选型部门登记销锁定为个别部门读取和写保护的A /阿复用界面C 11引脚复用引脚地址和8引脚的数据界面C促进快速系统内或外的系统编程的单电压3.0V至3.6V的操作供应的读取和写入操作业界标准的封装选项电压 32 -引脚PLCC 40引脚的TSOP

Architectural style of mostly Western-style villa, Beidaihe, a slight change in modern architecture to create a rectangular plane, the plane is also diverse; mostly single-storey building, some for two, three-tier architecture; a simple Western-style hipped roof; side, two face, built on three sides or four outside the corridor outside the gallery into a great depth.

建筑风格多为西式别墅，北戴河近代建筑为稍有变化的矩形平面，也有变化多样的平面；多为单层建筑，部分为二、三层建筑；简单的西式四坡屋顶；一面、二面、三面或者四面建有外廊，外廊进深很大。

The attentional and executive function were tested under the non-forced condition and the two attentional condition. Experiment 2 used tachistoscopic half visual field task under two dimensions of complex levels and three conditions (left or right visual field, or simultaneously in both visual hemifields) in order to test the function of an half hemisphere or interhemispheric coO p e r ation.

实验一：用两耳分听技术，分别测验大脑两半球在非注意条件时和注意条件时的注意分配与执行功能；实验二：用半视野速示术，分别测验在简单任务和复杂任务条件下，左、右视野单侧呈现和两视野同时呈现时，一侧半球加工和两半球同时加工的能力。

The French and Italian poets gave preference to the Italian form of sonnet—two groups of four lines, or quatrains (always rhymed a-b-b-a a-b-b-a) followed by two groups of three lines, or tercets (variously rhymed c-c-d e-e-d or c-c-d e-d-e)—which created a sonorous music in the vowel rich Romance languages, but in Shakespeare it is artificial and monotonous for the English language.

法国和意在利诗人优先使用意大利格式的商籁诗----两组四行诗（总是按a-b-b-a a-b-b-a的格式押韵）加上两组三行诗（按c-c-d e-e-d或 c-c-d e-d-e格式押韵），这就在元音丰富的罗马语言中产生了一种感人的音乐节奏，然而放在莎士比亚的英语作品里，就变得矫揉造作和枯燥单调。

My next Care was for some Ammunition and Arms; there were two very good Fowling-pieces in the great Cabbin, and two Pistols, these I secur'd first, with some Powder-horns, and a small Bag of Shot, and two old rusty Swords; I knew there were three Barrels of Powder in the Ship, but knew not where our Gunner had stow'd them, but with much search I found them, two of them dry and good, the third had taken Water, those two I got to my Raft, with the Arms, and now I thought my self pretty well freighted, and began to think how I should get to Shore with them, having neither Sail, Oar, or Rudder, and the least Cap full of Wind would have overset all my Navigation.

其次，我必须搞到枪枝和弹药。大舱里原来存放着两支很好的鸟枪和两支手枪，我都拿了来，又拿了几只装火药的角筒，一小包子弹和两把生锈的旧刀。我知道船上还有三桶火药，只是不知道炮手们把它们放在什么地方了。我找了半天，终于找到了。有两桶仍干燥可用，另一桶已浸水了。我就把两桶干燥的火药连同枪支一起放到木排上。这时我发现木排上装的东西已不少了，就开始动脑筋如何运上岸，因为一没帆、二没桨、三没舵，只要有点风，就会把木排打翻在海里。

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。