可改变的

Tins article will tell us the functions of CAI in English classroom teaching:1. the functions in English classroom teaching1. 1 enrich the teaching contents and change the monotonous design of traditional teaching1. 2 arouse the students interest and stimulate the studyintention1.3 make initiative study change into passive study1.4 lighten the students schoolwork2. the functions in modern education2. 1 remedy the differences between different schoolsand areas 2. 2 improve the process of teaching management2.3 enrich the reading matter of the outside class2.4 develop the long-distance education by using the multimedia and internet technologyBecause there are so many advantages about multimedia. many schools construct campus net and multimedia classrooms. Then designing and making CAI software became an important problem for these schools, so these article can tell us how to design and make it. In order to make CAI software better, the articled also tell you how to pay attention to something .That is the content of my article , I hope I ran consult it with you .Thank you.

充分运用现代教学技术武装我们的教学，对原有的教学生产方式来一场革命，这是教育实践的呼唤，也是时代的呼唤，本论文从多媒体在英语课堂教学中的作用出发，来说明运用多媒体进行计算机辅助教学的作用： 1 在英语课堂教学中的作用 1.1 丰富教学内容改变传统教学的单调模式 1.2 激发学习兴趣促进学习动机 1.3 变被动学习为主动学习有效体现教学的个体化和因材施教 1.4 为教师提供形象的表达工具有效地减轻学生的课业负担 2 现代教育中的作用 2.1 弥补不同学校、地区之问教学质量的差异 2.2 改善教学管理过程改进教学效果 2.3 丰富的课外读物 2.4 多媒体技术与网络技术的结合可有效地开展远距离教育正因为多媒体具有这么多的优点，所以许多学校多投资兴建了校园网和多媒体教室，如何设计和制作高质量的多媒体课件是许多学校迫切需要解决的问题，所以本文接下来谈论的是如何设计和制作多媒体课件以及在设计和制作过程中如何应用心理学上的注意规律等，仅供各位同行参考。

At present one-stop network popularizes platform to pay close attention to and be able to apply extensively by more and more enterprises, the network that the advantage that it has depends on popularizing platform to be able to realize much platform through one-stop network spreads the effect, cooperate overall business affairs message with professional search at the same time the service is aggregate discharge of many pure green business affairs, for the enterprise promotion was brought true click the business affairs discharge with efficient green, the gender overturns in the meantime changed the past to click the network that pays fee to extend pattern, effective control ill will clicks what bring the waste on resource cost and information feedback for the enterprise not to coordinate a phenomenon, through the free own help that build a station more does not have a website and need has the company of network promotion, a series of networks such as the website that has oneself on the base that does not raise any cost cost extend a service.

现在一站式的网络推广平台正被越来越多的企业关注并得以广泛应用，它所具有的优势在于通过一站式的网络推广平台便可实现多平台的网络推广效果，同时以专业的搜索配合全面的商务信息服务聚合了大量的纯绿色商务流量，为企业推广带来了真实点击和高效绿色的商务流量，同时颠覆性的改变了过去点击付费的网络推广方式，有效控制恶意点击为企业带来资源成本上的浪费以及信息反馈的不协调现象，通过免费的自主建站帮助更多没有网站而需要进行网络推广的企业，在不增加任何成本费用的基础上拥有自己的网站等一系列网络推广服务。

The effect of tribology factors on bearing vibration is studied experimentally. AR model and WPT are used to processing the normal arid abnormal signals. The results are as follows:1. The vibration of ball bearings is caused by the tribology action of contact pairs of ball and ring races and has the essential of tribo-dynamics. Any factors affecting the tribology characteristics of contact pairs will affect vibration and noise of bearings consequently.2. Vibration characteristics of bearing keep almostly unchanged with the increasing of axial load expecting the increasing of nature frequencies. When radial load increasing with axial load unchanged, nature frequencies keep unchanged but some new vibration peaks appears in the spectrum.3. Vibration amplitudes are damped and nature frequency are enhanced with sufficient lubrication. Vibration and noise of bearings increase obviously and roar can happen and the contact surfaces scratch slightly under insufficient and unclean lubrication state. Bearing will be disabled in a few minutes without any lubrication.4. Bearing vibration is unstable under low speed. With the speed increasing, the vibration become stable and natural frequencies increase slightly but the amplitudes increase apparently.5. Bearing vibration can be excited only by some harmonics ofwaviness without lubrication and by all harmonics with lubrication based on the theoretical analysis.6. The nature frequencies of ball bearings decrease with the increasing sizes. When international clearance increasing, nature frequencies decrease in radial and increase in axial and angular and the amplitudes increase in radial and decrease in axial and angular. When the number of balls increasing, nature frequencies increase and amplitudes decrease. When the pitch diameter increasing, axial nature frequency increase and others nearly keep no change. When outer race groove curvature radius increasing, nature frequencies increase in radial and decrease in axial and angular and amplitudes keep no change in radial and increase in axial and angular. When inner race groove curvature radius increasing, nature frequencies decrease and amplitudes increase.7. The distortion in amplitude and frequency components of bearing vibration signals picked up by the present probe measurement method is founded and right conclusions cannot be achieved by the signals. When accelerometer is rigidly screwed with steel stud onto a flat outer surface of a ball bearing, vibration signal can be got without distortion and the reliability of research on bearing vibration is assured.8. AR model is suitable for large samples of bearing vibration signals, square root of length of samples can be used as the upper limitation of order determination and the FPE order selection criterion is effective. Many advantages of AR spectrum are founded over the classical based on FFT.9. Time-Frequency analysis is necessary for abnormal noise of ball bearings. WPT overcomes the principle shortcomings of STFT and proved to be a best tool to process the abnormal signals.

理论分析和试验研究表明： 1球轴承振动是钢球—滚道接触副中的各种摩擦学作用引起的，具有摩擦动力学的本质，任何对接触副的摩擦学特性有影响的因素都将对球轴承的振动和噪声特性产生影响； 2中心轴向载荷作用下，载荷增大使球轴承的固有振动频率升高，载荷越大同样的载荷增幅引起的频率升幅减小，足够大的中心轴向载荷作用下载荷的变化对球轴承振动的频率特性不会产生明显的影响； 3轴向和径向联合载荷作用下，径向载荷不大时球轴承振动的固有频率基本不变，但是可能引起变刚度激励的非线性振动，出现新的频峰，过大的径向载荷将使部分钢球脱离接触，使球轴承的振动和噪声呈现不稳定状态； 4润滑对球轴承的振动和噪声特性有重要的影响，良好的润滑对振动有明显的抑制作用，润滑不充分时，振动和噪声的水平会有明显增高，一定条件下还会激发接触副中的谐振，发出啸声，造成接触表面的伤害，无润滑干接触时，短时的运转就会损伤接触副表面，使振动和噪声迅速增大，并随时可能引发严重的磨损和卡滞失效；接触副润滑良好时，油膜的"刚化效应"使球轴承振动的固有频率有所提高，润滑剂中含有弥散性污浊时，振动的幅度总体升高，但弥散性污浊不会改变球轴承振动的频率特性；浙江大学博士学位论文：球轴承振动的研究 5低速时，球轴承振动的基本特征呈现不稳定状态，随着转速的提高，球轴承振动的频率特性趋于稳定，固有频率频峰升高； 6理论分析表明，干接触时钢球和滚道表面波纹度的某些谐波分量能激励球轴承的振动，振动的幅值与谐波幅值成正比，实际球轴承中钢球的分布不可能完全均匀，波纹度的激励作用会随时发生；润滑接触的分析表明，波纹度的任意谐波分量均能激励球轴承的振动； 7球轴承的几何和结构参数分析表明，球轴承尺寸越大，径向、轴向和角振动的固有频率越低；钢球中心圆直径增大，球轴承的径向和轴向振动的固有频率基本不变，角振动的固有频率有所上升，振动的幅频特性基本不变；径向游隙加大使球轴承的径向振动固有频率降低，轴向和角振动的固有频率有所升高，径向振动幅频特性的幅值升高，而轴向和角向降低；钢球的数量增多使球轴承振动的固有频率上升，幅频特性的幅值下降，径向振动的幅值下降最为明显；外圈沟曲率半径系数增大使球轴承径向振动的固有频率升高，轴向和角振动的固有频率降低，径向幅频特性基本不变，轴向和角向幅频特性幅值升高；内圈沟曲率半径系数增大使径向、轴向和角振动固有频率均下降，振动幅频特性的幅值均有升高； 8试验对比表明，传感器采用探针式安装时，由于探针接触副接触特性的影响，钡(量得到的球轴承振动信号有失真，采用专门设计和制作的试验球轴承，以固定式安装加速度计，首次测量得到了球轴承振动的真实信号，通过对振动信号的分析，验证了球轴承振动的理论模型； 9)基于时间序列分析的AR模型适用于大样本球轴承振动信号的分析，以样本长度的均方根值作定阶上界，FPE做判阶准则，给出的AR谱光滑，频率分辨率高，是球轴承振动分析的简便而可靠的手段； 10以时频域分析的小波包变换分析球轴承异音信号能够比较好地定位和聚焦异音发生的时间，时间间隔，频率范围，同样是球轴承振动分析的可靠的手段，可用作球轴承故障诊断技术。

We expect it will benefit the industry field to break through the optical measuring limits at present by offering some new ideas. Optical measuring research based on moire interferometry has developed for several decades. The main idea of this research is to utilize the moire effect caused by two superimposed gratings of identical or similar spatial frequency. One is the reference grating and it is a virtual grating created by a computer program in this research; The other grating is the image of grating projected on the measured surface by the DLP projector, and this grating will distort because of the different sloped profile of the surface. To superimpose the program-created grating and the captured distorted grating will derive the so-called moire effect. This research combined the basic theory of optical interferometry and moire effect to project the different phases of the projected grating fringes by the phase-shifting method and compute the principal value of arguments between -π,π. In the end, the phase unwrapping program based on discrete Fourier transform of solving PDEs is used to unwrap the phase of the measured surface, and finally the surface profile is derived by the optical measuring system.

以叠纹干涉术为基础的光学检测研究之发展早已行之有年，而在本研究中所采用的投影叠纹法(Projection moiré)之主要精神在於藉由两道空间频率相近或相同的光栅相互叠加而成的效应，其中一道为参考光栅，而本研究中的参考光栅是以程式产生可调整不同空间频率的虚拟光栅；另一道则为投影至待测物表面的光栅影像，而在起伏高度不一的待测表面上的光栅影像会受到待测物表面起伏状况不同而在观测方向产生光栅投影条纹影像的歪曲变形，将电脑产生的参考光栅与由影像撷取装置所获取投影於待测物表面的光栅影像作叠合，便会产生所谓的叠纹效应；利用基本的光学干涉理论与叠纹效应结合，本研究中以相移法来改变投影於待测表面的光栅相位，再以相移法的理论反运算出在带有待测面各点高度资讯之介於-π，π相位主幅角，再以离散傅立叶转换解偏微分方程的相位重建程式还原待测面的相位值，以得知待测面之表面轮廓。

Using the 294cc rotary engine, it can influence the maximum rpm and power of the engine output under the terms of using all kinds of length intake. Then it can find out the best length of intake of the rotary engine. In addition, under the terms of space limit of intake, it can influence the maximum rpm and power of the engine output when the intake is forced to limit on a certain length. To install a resonance in the intake system, according to the equation of Helmholtz, it can design the all kinds of size of the resonance. Using to change the volume and geometirc form of the resonance, it can find out the maximum rpm and horsepower of engine output in order to reduce the influence of the variation of engine intake length. Under the verification of the experimental result, this simple device can increase the rpm and horsepower of the rotary engine obviously to achieve the output performance that the engine requires to supply. Such the revisal of intake need the lower cost but it can obtain very obvious efficiency. It is a very feasible way.

藉由一具294cc的飞行器引擎，在使用各种不同长度进气道的条件下，对引擎所能输出的最大转速及马力有一定的影响，藉此找出该具引擎的最佳进气道长度；此外，在进气道因空间限制的前提下，进气道被迫只能局限某个长度以下时，在这种条件下，引擎所能输出的最大转速与马力等相关性能会随之受到影响，在进气系统加装一个共振腔，配合Helmholtz的方程式，设计出各种共振腔各部位的尺寸，利用改变共振腔的体积与几何形状，可以寻求增加引擎转速与输出马力的最大值，藉此降低进气长度变化所带来的影响，在实验结果的验证下，此一简单的装置可以明显的增加引擎转速与马力，以达到对引擎所需的输出性能要求，这样的进气系统修改所需的费用极低，但却可获得很明显的功效，是十分可行的方式。

You are quite triumphant This very moment mood Real own because I very much treasureour meeting one another very very much, that has the certain fate, Ireally did not hope because of me the impulse idea, can cause oursentiment for a while to go bad Causes our friendship to change isnot good I really very much blame oneself, because own are the Chinese China'smatter manages again not not well also wants a type foreign countryold person to worry for me, I really very much do not have useful hereme only to be able with you to say again the sound sorry friend ofmine Hoped you can forgive my I since knew I have owed you to be very many always all do not have tobe able also to give you However this I have the difficulty to havein turn said with you, actually again I and you said previous two daysI had thought are very many, should I say with you, but when I makethe phone call for yours time I on regret But or said with you Againhere I hoped you do not blame me, I already very much to regret Triumphant I did not know I this action can let between us nearby thefriendship not be good Triumphant I knew the dissimilarity which weare the heart have cleverness but looked like you before to say,between us the communication really was very difficult to be verydifficult, but was in is difficult I also to hope which country nomatter you were at, perhaps worked I in there all to hope we couldhave the relation Between each other friendship is invariable, knewfinally is good..............

你很得意这一刻的心情真实的，因为我很treasureour会议的另一项极大，有一定的命运， ireally不希望因为我的冲动想法，可造成oursentiment了一会儿变坏，导致我们的友谊改变isnot好，我真的很责怪自己，因为自己是中国china'smatter管理又不是没有好，也想一类外商countryold人担心对我来说，我真的很没有有用hereme唯一能与你再次要说声对不起朋友ofmine希望你能原谅我，因为我知道我欠你太多，总是并非所有人都有创新型，也可以给你，但这次我有困难havein反过来说：与你，其实我和你说上两daysi还以为是很多，应该说，我与你，但当我出了电话，为你的时候我就后悔，但还是说你againhere希望你不怪我，我已经非常后悔胜利，我不知道我这一行动可以让我们之间附近thefriendship 没有好的胜利，我知道相异，我们正在进行的心脏有聪明的，但看上去像你以前说，我们之间的沟通真的是一件很困难的是verydifficult ，但在艰难的是，我也希望有哪个国家nomatter您的，或许工作，我在这里向所有希望我们couldhave的关系，彼此之间的友谊是不变的， knewfinally是好的。。。。。。。。。。。。。。

In view of executive power to intervene in the allocation of resources over the reality of the situation, should intensify their efforts to clean up the recent各种乱收费, levies, and shut the power of the currency market of the "gray channel" reflects the strong focus on cleaning up the community, do not lead to monopolies fair competition policy, and actively create a fair and regulated competitive environment, maximizing the contribution of income and reflected on and so on; to be a more effective means of remediation of illegal income, seek to abuse the interests of individuals or small groups with severe punishment imposed for corruption ; At the same time, it is necessary to speed up the reform of the political system, and promote democratization and openness in decision-making, and strengthen the public service and acts of administrative bodies at all levels of supervision and constraints on the exercise of such power by the process of forming a comprehensive and reasonable mechanism for binding.

当中产阶级成为一个国家的主流群体时，就会结成一张维护社会长治久安的&安全网&。如果说&社会稳定是压倒一切的政治任务&的话，那么，扩大中产阶级的比重就是实现稳定的社会基础。如何促进中国中产阶级的快速发展？笔者认为当前应特别重视以下几个方面：（1）加强法律保护的力度。实践证明，只有依法保护私人产权和维护社会公正，才能促使人们凭借勤劳和智慧去创造财富，才能抑制少数人依仗权势&寻租&和通过贪污腐败手段暴富，才能防止百姓的私有财产不被权贵势力非法侵吞。这样，所有的人将可平等地获得上升的机会，私人资本和职业阶层也会有更大的成长空间。（2）大力发展公共教育事业。知识能够帮助人们改变命运，只有大力发展公共教育，才能使更多的人得到平等分享经济增长成果的机会，这是知识经济时代培育中产阶级的&树人工程&。我们要尽快普及12年制义务教育，大力开展终身教育，打造更多的学习型组织，营造学习型社会的氛围，从而使更多的人通过攀登知识阶梯而升入中产阶级。（3）加快金融创新。中国居民目前工资收入在家庭收入中的比重平均为70％左右，大大高于发达国家50％的水平。工资收入在家庭收入中的占比过大，自然会减缓大多数人进入中产阶级行列的步伐。我们认为，要提高居民收入中非工资收入的比重，最重要的措施就要培育居民的投资意识，并通过金融创新为他们提供多样化的投资工具（如形式多样的共同基金等）。（4）提高专业技术人员、经营管理者、教师、研究人员、公务员等智力劳动者的收入，鼓励智力劳动者进行智力投资，并保护相应的合法权益。（5）建立职业经理人激励机制（包括年薪、奖金、红股、期权等方式），形成职业经理人致富与企业发展互动的财富积累机制。

Compare with tunable filter detection technique, the wavelength measurement technique using tunable source is analyzed theoretically. We design a kind of all-fiber sensing interrogation system, by using long-period fiber grating as edge filter to interrogate the sensing signal of the FBG sensor. The wavelength resolution of the sensing measurement is 0.05nm.A novel FBG Bourdon tube sensor has been constructed, utilizing the pressure mechanic amplify function of Bourdon tube. The measured pressure sensitivity is two orders of magnitude higher than a simple monomode fiber with an in-fiber grating. Especially the pressure sensitivity of the sensor can be determined by changing the parameters of the cantilever beam. Adopting polymer package technique, we coat fiber Bragg grating by using polymer with different mechanic properties.

利用波登管对于压力的机械放大作用，研制了一种新颖的光纤光栅波登管压力传感器，将FBG的压力灵敏度提高了两个数量级，特别是这一传感器的压力灵敏度的大小可以通过改变悬臂梁自身的参数灵活控制；采用聚合物封装技术，将FBG封装于具有不同力学特性的有机聚合物基底中，利用基底的带动作用，将FBG对压力的灵敏度分别提高了20倍和31.7倍，由于我们采用了特殊的工艺，封装后的FBG不出现任何光栅啁啾；在成功封装的基础上对封装光栅的蠕变效应、FBG与封装材料之间的防滑处理等进行了实验研究；设计了外加圆柱形铝管的聚合物封装光纤光栅，将FBG的压力灵敏度提高了1430倍，可用于对微小压力变化的精确测量。

Large supply of non-hybrid seeds for vegetables, grains and herbs; make sure they are of the non-GMO, non-hybrid, propagating variety; also be sure to have instructions on how to harvest seeds including information on "moldering" techniques to properly collect seeds from certain plants such as tomatoes; note lastly that due to damp low-sunlight conditions many crops will not grow without growing lights and protection from rain; special research is therefore required on which crops will grow best (for instance, patty rice should grow better than wheat under damp conditions); also be sure to take into account the climactic change which results from the change in latitude due to the pole shift as a location which does not change greatly in latitude will fare better than one which falls in the vicinity of the new poles for instance; the pole shift theory presented on Zeta Talk states that the terrestrial North Pole will move to the middle of the Atlantic off the bulge of Brazil and ultimately one will need to observe the climate and the position of the sun to figure out the new latitude, and either adapt or re-locate as needed

要有许多蔬菜，谷物和草药的的非杂交种子；确信它们是非转基因，非杂交的，是用于繁殖的品种。也得确信具有怎样收获种子的指导书说明，包括&制造&技术方面的信息，以便恰当地收集某些植物的种子，例如西红柿。最后得注意，由于幽暗的低阳光环境，在没有阳光，以及没有其进行雨水防护的情况下庄稼将不会下生长。因而需要进行特别的研究，看看哪种庄稼在这种条件下生长得最好（例如，在昏暗的状况下，水稻应该比小麦生长的更好）。也要确信考虑了极移造成纬度改变，因而导致气候变化。例如，与那些位于新极点附近的地方相比，纬度变化不特别大的地方情况要好得多。齐塔人之声讲述的极移理论表明了地球北极会移动到大西洋中部的巴西隆起处。最后需要观察气候状况以及太阳的位置，以弄清楚新的纬度，根据需要，即可适应当地的条件，又可再次搬迁。

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。