小卡

There is always something to be done: a tin-tack here, a Venetian blind to put straight, a fan to nail up , or part of a carpet to nail down --all of which I can do with my pipe in my mouth; while Carrie is not above putting a button on a shirt, mending a pillow-case, or practising the "Sylvia Gavotte" on our new cottage piano (on the three years' system), manufactured by W.

总是有一些事情可做：钉个钉儿，拉直百叶窗，在墙上钉把扇子或是钉牢地毯的某个地方，所有这些我抽着烟就轻松地做了。卡丽却只能给衬衣钉个纽扣，缝补一下枕套或是在我们新买的竖式小钢琴上练练《西尔维亚加伏特舞曲》。

The shortest distance between tube stations is Leicester Square and Covent Garden on the Piccadilly line - 0.16 miles.

站间距最小的是皮卡迪利线上的李斯特广场和柯芬园，只有0.16英里(257.50米)。

Not far from the Heidelberg Project, on an abandoned lot, a former water-company worker turned urban farmer, Mark Covington, tends vegetable patches.

海德堡项目不远处的一个废弃空地上，前自来水公司的工人马克？卡温顿转行成了城市农民，他目前正照料着小块菜地。

Creo in promoting FM tocommandthe to recab, but it does not simply just stressed very small mesh point on the cards and membership cards and quality of production, it also due to its mesh point size consistency makes it possible for a balanced distribution of oil and water.

Creo在推进调频加网的使用上要先人一步，但它不仅仅只是单纯强调非常小的网点对制卡和会员卡制作质量的影响，它还推广由于其网点大小的一致性使得油和水分布均衡方面的应用。

In the case of the chemical composition of EB inks deployed properly, than many oxidation of trabeculectomies dry ordinary ink cretonne to a much smaller, and the business card printing and membership card making products surface clean no stains.

如EB油不朱的化学身不合调配恰当，比好众氧化结膜潮干的别致油不朱的气息给小好众，且制卡和会员卡制息品暗不天肮不净无不净不面。

What made Picassos' cubist paintings is the amount of human emotion he would maintain within the multi-faceted figures.

制造了毕卡索的立体派艺术家画的人类是数量情绪他会维持在那里面多有小面的身材。

Eighteen years later, Casa Grande crowned La Cuesta Encantada, Hearst's "Enchanted Hill" above tiny San Simeon.

18年后，卡萨格兰德加冕德拉库埃斯塔恩坎塔达，赫斯特的"魔法山"小圣西米恩以上。

Ignoring the advice of a scout named "Curley," he marched more than 200 federal troops to their deaths at Little Big Horn in a legendary battle known as Custer's Last Stand.

他曾不顾侦察兵克利之劝，硬将二百多名联邦部队带至「小大号角」，而於著名的「卡斯特最后一站」战役全军尽没。

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。

There are some details: writing a postcard to far friends on the train inthe morning; riding a bike up to a hill which is coverd golden corn in the sunset; singing and dancing with the music step in the crowd of the street; taking a photo before the Cologne Church by a foreigner in the DC screen where i can see my glorious posture.

一些快乐的细节：在清晨的火车上给远方的朋友写明信片；在日落的时候从卡塞尔的郊外飞快的骑着车冲上种满麦子的小山坡；在熙攘的街头看着街头艺人打着鼓唱着欢快的歌不由自主的跟着和；在莱茵河畔让老外帮忙拍下独自站在科隆大教堂前笑容，神采飞扬的背着包的样子。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。