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This paper introduces the function, design idea and realization of taximeter based on FPGA. The design takes the method of top-down and step by step. The whole system was divided into five modules that were described by VHDL or schematic diagram.

详细说明：摘要：本文介绍了基于FPGA 的出租车计价器系统的功能、设计思想和实现，该设计采用模块化自上而下的层次化设计，顶层设计有5 个模块，各模块中子模块采用VHDL 或图形法设计。

The phase of ω0 frequency fluctuates tempestuously. The resonance peaks of flexural and torsional vibrations response are present at 2/3ω0 1/2ω0 1/3ω0 and 1/4ω0 with three kinds cracked rotor models. Near 1/2ω0 frequency, quasi-periodic and chaotic motions maybe appear. Periodic, quasi-periodic and chaotic motions show on alternately when the rotating speed is near to 2/3ω0.Combined step-by-step integral method with traditional transfer matrix method, an increment transfer matrix method is put forward.

研究结果表明：各种故障情况下，华北电力大学博士学位论文弯振和扭振之间都存在祸合关系，但弯扭祸合振动一般不会威胁机组安全运行：在叶片丢失或滑环飞脱故障时，将产生很大的弯振，同时各转子扭振也将被激发出来，它以工倍频和前三阶固有频率为主；在各种电气故障情况下，各转子都很快被激励出较大幅值的扭振来，相应各转子弯振也发生一定的变化，但它的变化明显滞后于扭振，扭振和扭矩主要以前三阶固有频率为主。

In this paper, we study the synergetic effects of second ligands and luminescence enhancement effects of doping ions starting from the binary complexes of europium and terbium with inexpensive benzoic acid and its derivatives, and improve the luminescence of complexes step by step.

本文从比较廉价的苯甲酸衍生物配体与稀土铕、铽的二元配合物入手，研究第二配体的协同效应和掺杂离子的荧光增强效应，逐步提高配合物的荧光性能。

For the issue concerning the investment equity shares of securities investment funds (hereinafter referred to as the funds), we should carry out the relevant work on the base of the piloting reform step by step and make further provisions thereabout according to the market development.

对于证券投资基金投资权证的问题，应当在试点的基础上逐步开展，待积累一定经验以后，再根据市场情况作进一步规定。

It is shown that the rate process of thermolysis can be divided into two steps with the first step described by shrinking core model and the second step by one order reaction model.

研究证明热分解过程可分为两个阶段，前期可用缩芯模型描述，后期则以一级反应模型描述。

This step produces a thiol ester. In the next step, methanolysis of the thiol ester is carried out in the presence of a basic catalyst.

该步骤产生硫羟酸酯，在下一步中，在碱性催化剂存在下进行硫羟酸酯的甲醇解。

We carry out this principal throughly and keep developing step by step under the sharp competitive markets.

由于我们从创办伊始就始终不渝的贯彻这一经营理念，使公司的发展一步一个脚印地在激烈的市场竞争中得以发展壮大。

The presacral haemostatic thumbtack projector is more quickly and has better therapeutic effect than tradition thumbtack in controlling presacral bleeding, and this new appliance could be used and advocated in clinic step by step.

使用骶前止血钉发射器对骶前大出血的止血速度比钉堵法快，止血效果好，是一种临床上可逐步应用与推广的新型止血器械。

In this thesis,we begin our research of mathema tical model of borehole layout with an eye to the whole and then analyze step by step the effeciency, flexibility and complexity of all kinds of calculating me thods.

本文对钻井布局问题的研究，是从全局搜索入手，逐步深入讨论了各种算法的有效性、适用性和复杂性，得到不同条件下求最多可利用旧井数的较好算法。

Hello, I call xxx, comes from the Chinese commercial aviationuniversity, goes study graduates from commercial aviation securitytechnical management specialized,2,008 years in June I am the hobby movement person, likes in the movement the speed,between the fervor as well as team's cooperation I like themountaineering, the swimming, As well as the ball games project, the natural basketball is Imost loves I also like reading, can learn very many knowledge in thebook, enriches oneself Cerebrum, because I may not want to let the others say I am thefour limbs developed simpleminded fellow, certainly, I also to verymany things feeling Interest, for instance computer programming, music manufactureand so on Said my hometown, my hometown but a beautiful place, in Chinamost northwest, is Xinjiang, I live city Is is rich in the fragrant pear Korla, there has beautifulKongque River, Shitoushan, has the fragrant profit four directions thefruits and melons, the barbecue, the butter nang , but also has The warm hospitable people, welcome to me the hometown tosojourn Again said I today am do any, I have a dream, I thought today canrealize, when I or young boy's time Has a dream, hoped can drive the airplane to like Tiercel equally to soar in the sky, also becomes a great pilot, I also continuously for realize own dream but diligently, theassiduous study, persisted exercises the body, faces own dream one tomake great strides forward step by step, Today finally fortunately participates in the aviation schoolinterviewing, I very excited, also is very happy, my paying will beable to have a result in today, I will not be able easily Let this opportunity sneak off, can firmly grasp, I believed Ican succeed!

由于要接受面试，考察英语水平，谁能帮我把下面这段自我介绍翻译成英文的自我介绍大家好，我叫xxx，来自中国民航大学，就读于民航安全技术管理专业，2008年6月毕业。我是个爱好运动的人，喜欢运动中的速度，激情以及团队之间的合作。我喜欢登山，游泳，以及球类项目，当然篮球是我的最爱。我还喜欢看书，在书中能学到很多知识，来充实自己的大脑，因为我可不想让别人说我是个四肢发达头脑简单的家伙，当然，我还对很多东西感兴趣，比如电脑编程，音乐制作等等说下我的家乡吧，我的家乡可是个美丽的地方，在中国的最西北，就是新疆，我所居住的城市是盛产香梨的库尔勒，那里有美丽的孔雀河，石头山，有香益四方的瓜果，烤肉，酥油馕，还有热情好客的人们，欢迎到我的家乡来作客。再来说下我今天是来干什么的吧，我有个梦想，我想今天能够实现，当我还是个小男孩的时候，就有一个梦想，希望能驾驶飞机像雄鹰一样在天空中飞翔，也就是成为一名伟大的飞行员，我也一直为实现自己的梦想而努力着，刻苦学习，坚持锻炼身体，朝着自己的梦想一步步迈进，今天终于有幸参加航校的面试，我很激动，也很开心，我的付出在今天将会有所成效，我不会轻易让这个机会溜走，会牢牢把握，我相信我能成功！谢谢

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。