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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。

Well I do this in my slumber summer I ain't none of these half-assed newcomers, you know how I do summer I drop heat, when you bring the sun up The combo make niggaz act up, I pick the gun up Niggaz back up; they know I'm not no fronter I don't talk shit, I just flip it +Un+ ya Sorry Lance, I'm just trying to advance my quotes I ain't making you the butt of my jokes But let's not stray from what I came to say To my beloved, think we need some time away They say if you love it, you should let it out its cage And fuck it, if it comes back you know it's there to stay It's tugging, at my heart, but this time apart is needed From the public, who should've gave me the pulitz' Instead gave me they ass to kiss But you know me, thugging 'til the casket dips But still shine light down on all my peers I know they weird... some queer, I still want them to share And all the success I received, I know you can't believe I still love 'em but they don't love me They like the drunk uncle in your family You know they lame, you feel ashamed, but you love 'em the same It's like when niggaz make subliminal records If it ain't directed directly at me, I don't respect it You don't really want it with Hov, for the record I put a couple careers on hold, you could be next kid Keep entering the danger zone You gon' make that boy Hov put your name in a song If you that hungry for fame, motherfucker c'mon Say when, take ten paces and spin But on another note,'bout to take another vaca' On another boat, goddamn a motherfucker rode His way out the hood, and I pray that I stay out for good But any day you know a nigga could Try and play like he Suge, then I gotta play like Dutch Schultz You pass the dutchie, I blast you, trust me Niggaz can't fuck with me I'm in a good mood, you lucky, I got a good groove And I ain't trying to fuck my thing up But I will lay down a couple green bucks, get you cleaned up Now I'm +Pulp Fiction+, Colt four-fifth and Young niggaz that blast for me/blasphemy, no religion Listen here summer baby, I just believe it's the right thing to do I got a brand new bitch, corporate America She showing me a lot of action right now And I know you put me on my feet and all, but I mean, it's time for me to grow You gotta let me go baby, you gotta let me go I'm done for now, so one for now Possibly forever, we had fun together But like all good things, we must come to an end Please show the same love to my friends Dear summer

好，我做这个，我沉睡的夏天，我不是这些半assed新人你知道我怎么做我夏季降热，当你把在太阳升起的二合一作出niggaz法，我拣了枪niggaz后盾；他们知道我不是没有一线，我不说屁话，我只挑它++联合国娅对不起长矛，我只是试图推进我国引号，我是不会令你天大的笑话我，但让我们不要再流浪从我来告诉亲爱的，认为我们需要一些时间，他们说，如果你爱它，你应该让出它在笼中，他妈的，如果他回来了，你知道它的存在，以保持它的拉着，在我的心但这个时候，除了需要来自公众，谁已经给我的pulitz '反而给我的驴子，他们的亲吻，但你也知道我， thugging '胡麻的椟点头，但仍焕发轻，取缔所有同行我知道他们怪异……有些奇怪，我仍然希望他们能够分享和所有的成功，我刚收到我知道你不相信我还是爱'统，但他们不爱我，他们像喝醉了，在叔叔你的家人你知道他们跛了，你会感到羞愧，但你爱的电磁相同它就像niggaz潜意识作出记录，如果不是直接针对我，我不尊重它，你真的不希望它与hov ，根据纪录，我把一对夫妇的事业停摆，你可以在未来保持跑步进入危险地带，你健在'，使男童hov把你的名字一首歌，如果你饿了，对名利，你娘c'mon时说，要花十年的腾飞和自旋，但在另一份说明，'布特采取另空泡的另一条船，福清一娘骑着出路的方巾，我祈求我留出好的，但有一天你知道了nigga可以试着玩像他素，然后推荐我喜欢扮演荷兰人舒尔茨递过dutchie ，我爆你，信任我niggaz不能他妈的，我用我的心情好，你运气好，我有一个好槽，我是不是他妈的我的事了，但我会打下夫妇绿钱，你得到清理，现在我纸浆+小说+， 1485五分之四和年轻niggaz爆我/亵渎的，任何宗教听听这里夏季宝宝我只是认为这是正确的事情要做，我有一个全新的荡妇，企业界她展示了我许多行动，现在，我知道你把我站起来和所有的，但我的意思是，它的时候，我成长你推荐，让我去宝宝推荐你让我走我不行了，所以一人，现在可能永远我们玩在一起，但象所有的好东西，我们必须走到了尽头请你拿出同样的爱，我亲爱的朋友夏天

We meet in this game This is still infatuated with a network Let me be your friends one by one to leave the game To the pursuit of real-life time Then there is a fishes persist in the conviction Let me come to the so-called final Finally, we have a full class to We also become a game of a husband and wife Together to chat together to fight together to see the scenery Appear together in front of friends I have told you several times whether I would like to leave the game But do not know what I come back time and again the Now, I once again decided to leave the game I do not know how long this can leave I do not dare In fact, said to leave the game say that the discussion was not as good as you After the full level because I slowly began to weary of the game Do you have is a day I insist on the belief line Recently, I go to bed every night before you would like to But not like before, like the game's equipment But in reality you imagine how a person What kind of character, and so there We will occasionally illusion of reality can come together The game took a quarter of my college life time Reform is the time to leave As in real life too cruel I felt pressure brought about by the reality Whether in life or learning I really like this now become a regular university, said the University graduate unemployment is equivalent to That is not what I want I am not worried that I can not find a job after graduation Not because of the need to Go on like this I do not even know that after I graduated I can do what I do Looking for a job on it is an impossible dream of Do you still remember I remember a long time ago I asked you I ask you to do what - the sun - the stars - the moon I have become a game where you have the sun I hope I can become your reality stars I would also like to leave after you I hope you will be able to chat with me in the past I hope we can do Haojuhaosan The way the election is himself Life must continue

我们在这场比赛中相遇这是与网路仍痴心让我成为你的朋友们一个接一个，去游戏现实生活时间的追求然后有一个鱼类坚持信念让我谈谈所谓的决赛。最后，我们必须以一个完整的类我们也变成了一个游戏的丈夫与妻子一起，一起聊天，争取一起看风景前面的朋友在一起显示我已经告诉你几次是否我想离开游戏但不知道什麼我回来一次又一次，现在，我又一次决定离开游戏我也不知道多久这可以离开我不敢其实，说要离开讨论不是与你的一样好的游戏说后全部级别因为我慢慢开始厌倦游戏你是我坚持的信念行的一天最近，我去睡觉每天晚上之前您想要但不是象以前，像游戏装置但在现实中你就可以想像如何一人什麼样的字元，并因此有我们偶尔会现实的幻想可以走在一起这场比赛拿了我的大学生活时间的四分之一改革是离开的时候在太残酷的现实生活中的作为我觉得压力带来的现实无论是在生活或学习我真的这样现在成为一个说的正规大学，大学毕业生失业等於这是不是我想要的我不忧虑我不能毕业后找到一份工作不因为的需要这样下去我甚至不知道，我毕业后我可以做我做些什麼找一份工作就是一个不可能的梦想的你还记得吗我记得很久以前我就问你我问你做了什麼--星星-太阳月亮我已经变成一场游戏，在有阳光的地方我希望我可以成为你的现实星星我亦想在此之后你离开我希望您将能够在过去与我聊天我希望我们可以做 Haojuhaosan 选举方式是自己必须继续生活

Over the past few days and watch Heling words: Luandan inside the long hair; chicken can be several feet out of 3; Yingdu on the existence of the world; dogs can be named as sheep, horse can be said to be the oviparous; can Xiama There are said to be a long tail; the fire itself does not sense heat; in the mountains echo the mountains also give birth to prove the mouth; wheels will never be a way; eyes to see as a lack of substantial capacity; to identify foreign objects can not always be the real thing; turtle May be longer than a snake; Square can not draw a square and compasses can not be used to Circle; own mortise and Suntou not completely fit; birds can be seen there had been no movement; the arrow flies off a Stay, there are not stop time; puppy dogs do not have to; Ma Huang, the Black Cattle can name three reproach; dog might as well call it the black dog; known as the lone horse that it should not have had the mother; foot Long sticks, the interception of 50 per day, 10,000 cut-off points are a never-ending, an endlessly Landiao.

而几天来观看鹤龄的言辞：卵蛋里面长着毛；鸡的脚可以数出三只；郢都内就存在着天下；狗也可命名为羊，马能够说是卵生的；虾蟆可以说是长有尾巴；火本身并没有热感；山中的回音证明大山也生出了口；车轮永远不会着地；眼睛缺乏看视实质的能力；指认外物永远达不到事物的实际；乌龟可能比蛇还长；角尺不能画出方形，圆规也不能用来画圆；自己的榫眼与榫头不会完全地吻合；飞鸟的身影也可说不曾有过移动；飞逝而去的箭头有停留、也有不曾停歇的时刻；小狗可以不是狗；黄马、黑牛的称谓可以数落出三个；白狗也可以叫它黑狗；称作孤驹应该说它不曾有过母亲；一尺长的棍棒，每天截取一半，一万年也分截不完，一篇滥调没完没了。

Once the auditors know that the audit committee will require them to affirmatively endorse, rather than merely acquiesce to, management's actions, they will resist misdoings early in the process, well before specious figures become embedded in the company's books. Fear of the plaintiff's bar will see to that.

我们这四个问题最主要的优点在于，它们将能够发挥防范于未然的效果，一旦会计师了解到审计委员会将会要求他们肯定地为管理当局的行为背书，而不是默默地姑息他们时，会计师就能够在事情刚发生的初期就出面制止，让有问题的数字不在会计帐上出现，可能的牢狱威胁保证会发生效用。

By using the said model, the mass flow of flue gas and steam can be calculated on the basis of temperature and pressure concerning the working medium at inlet and outlet of the boiler's heating surface, and the variated amount of the heating surface's thermal resistance can be calculated without using structural parameters of the heating surface.

由于简单换热器模型能够根据锅炉受热面进、出口处工质的温度和压力，计算烟气和汽的质量流量；可以不使用受热面的结构参数，计算受热面导热热阻的变化量。所以，采用该模型开发电站锅炉吹灰优化控制系统，能够解决传统方式存在的流量计算精度低、污垢热阻计算不准确等问题。

The definition of generator angle is proposed in this paper. A new method to deduce generator angle by using rotor rotation signal is illustrated, which compares the phase difference between GPS timing pulse and RRS. Using only mechanical signal, the technique unfreezes limitation of zero-cross of generator terminal voltage during transient process. Automatic correction of initial generator angle is also proposed .

本文介绍了同步发电机绝对转子角的定义，提出了一种测量绝对转子角，进而获得高精度的相对转子角的方法；此方法不使用机端电压过零整形脉冲，而是将机组键相脉冲与GPS 定时脉冲比相，并能够自动整定初始位置角，因此，测量结果不受发电机运行状态的影响，能够在各种运行方式和扰动情况下获取高精度的绝对转子角。

No, the hull is constructed with enough flotation that it will always remain buoyant and level, even if the cockpit and engine bay are fully flooded. The water level in the cockpit would not exceed mid-waist level in such a situation, so water could be easily pumped out and the vessel refloated.

不会，船体结构使得船有足够的浮力，船只会自动上浮并保持水平，即使驾驶舱和引擎室全部进水，在这种情况下驾驶舱内的水位也不会超过中位线，因此水能够很容易地通过水泵排出，船只又能够上浮。

However, it can only implement the limited operation to the spatial objects, cannot carry on transformation, index, interlink age and excavation to the spatial data, and hard integrate other information with combining map variable to set up and analysis new variable. Meanwhile, relational model in the traditional DBMS and the object- oriented modeling do not completely suit the spatial application domain. The relational model can handle topological relation well, but shows inabilities to that complicated level crossing the spatial region. Object-oriented model using software method based on the principle of the customer defined data type supports the abstract data type, especially spatial abstract data type, and possesses polymorphism and inheritances, and it can deal with topological and the layer relation, but hardly processes important continuous phenomenon in space.

GIS是当今操作有关空间信息的成熟工具和技术，但其只能对空间对象进行有限的操作，不能对空间数据进行变换、索引、链接和挖掘，难以集成其他信息来构建和分析新变量；而传统数据库管理模型中的关系模型和面向对象建模也不完全适合空间应用这一领域，关系模型能够较好地处理拓扑关系，但对表示横跨空间区域的复杂层次却无能为力；面向对象模型的软件方法支持抽象数据类型，特别是空间抽象数据类型，具有继承性和多态性，能够处理拓扑和层次关系，但难以处理空间中重要的连续性现象。

Application of Dry Distillation Sludge Treatment is conducted in fully enclosed conditions, heat loss is minimal, produced bio-carbon sale is profitable, condensed water is recycled and reused to save water costs.

干馏处理污泥不受污泥含水率的影响；不受外部条件、环境、气候等方面因素制约和影响；污泥系统能够连续稳定运行；副产品生物有机碳用途广泛，且能够长期保存。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。