迅速发生的

Blood poisoning, or septicaemia, is a bacterial infection that occurs when bacteria get into the bloodstream and multiply rapidly.

血液中毒，或败血症，是一种细菌感染时所发生的细菌进入血液和繁殖迅速。

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。

Last month an edict banned the rapid dollarisation of the economy that is taking place.

上个月颁布了一项法令，禁止正在发生的经济迅速美元化。

RESULTS: Rapidly progressive crystalline lens opacification occurred in 9 eyes within 4 to 15 weeks after diagnosis of Acanthamoeba keratitis. Three were associated with inflammatory complications, including anterior scleritis (2 eyes) and iridocyclitis (1 eye).

结果：在诊断为棘阿米巴角膜炎后，9只眼在4-15周内迅速发生了晶状体的混浊。3只眼与炎性并发症相关，包括前巩膜炎（2只眼）和虹膜睫状体炎（1只眼）。

RESULTS: Rapidly progressive crystalline lens opacification occurred in 9 eyes within 4 to 15 weeks after diagnosis of Acanthamoeba keratitis.

结果：在诊断为棘阿米巴角膜炎后，9只眼在4-15周内迅速发生了晶状体的混浊。3只眼与炎性并发症相关，包括前巩膜炎（2只眼）和虹膜睫状体炎（1只眼）。

Being combining with products distribution in styrene oxidation, we propose the styrene epoxidation carry out with Ti metallacyclo intermediates, And at the same time Ti-ZSM-5 have properties both catalytic epoxidation and acid-catalysis, namely the skeletal Ti can catalyze styrene epoxidation to styrene oxide and the skeletal Ti and Al can provide Lewis acid site to cause the rearrangement of styrene oxide to phenylacetaldehyde rapidly, the solvolysis to glycols and the cleavage of C=C double bond. Ti-ZSM-5 can also provide Bronsted acid site simultaneously, which is also catalytic center for the solvolysis to glycols.

同时结合Ti-ZSM-5催化选择性氧化苯乙烯反应的产物分布结果，提出苯乙烯环氧化反应可能是通过金属有机环机理进行；Ti-ZSM-5同时具有催化环氧化和酸催化两种功能，其骨架钛可催化苯乙烯环氧化生成环氧苯乙烷，而骨架钛和骨架铝等可提供Lewis酸位使环氧苯乙烷迅速发生重排生成苯乙醛从而使其成为反应的主要产物，同时还可发生加成以及碳碳键的裂解等副反应：Ti-ZSM-5也提供Bronsted酸位，它也是生成加成产物的活性中心。

For this to have happened swiftly, however, there would have had to be different institutional arrangements.

不过，要想让这一切迅速发生，我们必须建立不同的机制安排。

Localistic way of thinking; localism

交警迅速赶到事故发生的地点。

The only report is done by our research team about the distribution regularity of the three kinds of muscarinic receptor subtypes in normal human prostate in 2006 The cholinergic receptor expression was prevalent in many tumors, in which mostly higher than in the normal tissue.

最近几年，关于前列腺癌发生和进展中发生的分子生物学改变方面的知识增加迅速，对肿瘤分子生物学更好的理解对于建立新的对策来延缓或抑制肿瘤的进展具有重要的意义。

This time, several main task personnel anxiously is waiting for the region senior official, as soon as saw the yellow senior official's to rush, immediately put through the event to report the place yellow race Mars interspace observation station, after Huang Qu senior official yellow Jinlong and the crew has greeted, directly arrived in front of the giant computer display monitor, not big a while, transmitted Mars aspect the live videotaping, saw only observes stationmaster a face startled appearance, saw the yellow senior official, immediately slightly calm, but still some aphasias explained religious doctrine:"Reports the yellow senior official, because in the short-term Milky Way nameless region will have a super giant star to have the violent detonation, instantaneous will produce in it the formidable shock-wave as well as will cause from this under the rapid change gravitational field together function, caused in the Milky Way correlation region to have a series of chain-reactions, finally forced a distance Earth probably is 20,000,000,000 kilometer diameter 100 kilometer about planetoids changed its original movement track; Latter passed through the home station most advanced computer to calculate repeatedly has obtained an astonishing result: This will change orbital the planetoid rapidly to hit after a year to ours Earth!"

此时，几名中心工作人员正急切地等待着区域长官，一见黄长官闯了进来，就立即接通了事件报告地点黄色人种火星星际观测站，黄区长官黄金龙与全体工作人员打过招呼后，就直接来到巨型电脑显示屏前，不大一会儿，就传来火星方面的实况录像，只见观测站长一脸惊慌的样子，见到黄长官，立刻稍微镇定了一下，但仍有些失语般地讲道：&报告黄长官，由于近期银河系无名区域内有一颗超级巨星发生猛烈的爆炸，在其瞬间产生的强大冲击波以及由此而导致的迅速改变的引力场共同作用下，引起银河系相关区域内发生了一系列的连锁反应，最终迫使一颗距地球大约为200亿公里的直径100千米左右的小行星改变了其原有的运行轨道；后又经本站最为先进的电脑反复计算得出了一个惊人的结果：这颗改变轨道的小行星将于一年后急速撞向我们的地球！&

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。