圆和

Let's have a look at what Hogwarts students are served at lunch, dinner and feasts:Pumpkin juice seems to be the only drink, water is never mentioned for meals,(although Harry had a drink of water when he woke up in the middle of the night.) Roast beef, roast chicken, fried sausages, stew, casserole, tripe (which McGonagall ironically offers Trelawney in PA), pork chops,shepherd's pie, steak, Cornish pasties, lamb chops, sausages, bacon and steak, steak and kidney pudding, steak and kidney pie, black pudding, sandwiches (chicken and ham, for Harry and Ron in CS); bread, marshmallows and crumpets (Harry and Ron roast them over the Common room fire during the Christmas holidays in PS/SS), baked pumpkin, roast potatoes, jacket potatoes, boiled potatoes, mashed potatoes, chips, Yorkshire Pudding, peas, sprouts, carrots, gravy, ketchup, custard tart, Mint Humbugs, ice cream, apple pies, treacle tart, Spotted Dick, chocolate éclairs , chocolate gateau, jam doughnuts, Trifle, strawberries, jelly, and rice pudding.

让我们来看看霍格沃茨的学生在午餐、晚餐和宴会上都吃些什么吧：南瓜汁似乎是唯一的饮料，水从未出现在任何一顿饮食中，（虽然哈利深夜醒来时喝过水）烤牛肉、烤鸡、炸香肠、炖肉、砂锅、内脏（第三册书中麦格教授给特里劳妮盛过一次）、猪排、羊肉馅饼、牛排、康瓦尔郡菜肉烘饼、羊排、香肠、熏肉和烤鱼、煎肉和腰子布丁、牛排和腰子馅饼、黑布丁、三明治（第二册中哈利和罗恩吃的鸡肉火腿布丁）；面包、蘑菇和圆饼（第一册中哈利和罗恩曾在圣诞节期间在公共休息时的壁炉火上烤着吃），烤南瓜，烤马铃薯，带皮马铃薯，煮马铃薯，土豆泥，薯片，约克夏布丁，豌豆，豆芽，胡萝卜，法式肉酱，番茄酱，奶油馅饼，薄荷硬糖，冰淇凌，苹果派，蜂蜜馅饼，葡萄干布丁，，巧克力奶油蛋糕，果酱面圈，小蛋糕，草莓，果冻和米饭布丁。

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。

Formerly JINYUN Wangshi Tool Factory is a professional production of various specifications of high-speed steel circular saw blades, pull a knife, saw blade milling cutter, cutter blade on three sides, high-speed steel lathe tool, the insert tooth circular saw blade, rubber blade, blade of paper with a saw blade and the kinds of non-standard custom-made knives, cutting tools; with advanced production and testing equipment, perfect technology management, technical force is abundant.

浙江阿波罗工具有限公司是一家专业生产各种规格的高速钢圆锯片、拉刀、锯片铣刀、三面刃铣刀、高速钢车刀条、镶齿圆锯片、橡胶刀片、分纸刀片、带锯条及定做各种非标刀具、刃具；具有先进的生产和检测设备，完善的技术管理，技术力量雄厚。

Companies are equipped with advanced production equipment and inspection equipment: CNC Center CNC computer lathes, CNC Sodick wire-cutting, CNC EDM, professional inner circle grinding, precision cylindrical grinding, precision surface grinding and other advanced processing equipment and optical projection Yee, hardness tester, surface sand blasting machine, marking machine, such as the surface of high-precision testing equipment.

公司配备有先进的生产设备和检验设备：CNC中心拥有CNC电脑车床、沙迪克CNC线切割、CNC电火花成型机、专业内圆磨、精密外圆磨、精密平面磨等先进加工设备及光学投影议、硬度计、表面喷砂机、表面打标机等高精度检测设备。

A mathematical mode for circle parameters evaluation is e stablished, the corresponding software is designed and has been applied to the m easurement software of universal tools microscope successfully. A practical case for measuring a ring gauge's diameter and roundness error by the image method is given.

建立了圆参数评定的数学模型，设计了相应的误差评定软件，成功地应用到了微机型万能工具显微镜的测量软件上，并给出一个影像法测量光滑环规直径和圆度误差的实例，将改进置换算法的评定结果与其它评定方法进行了比较。

The CL data file can be converted to NC code with NC post module of Pro/E, which can shorten design cycle of tricone rock bit, improve design quality and enhance the competitive capacity and innovative ability of enterprises.

在Pro/Engineer环境下首先由软件建立钻头牙轮的三维实体，然后应用Pro/NC模块完成了牙轮内圆孔的粗、精NC加工，生成了CL刀具路径数据；完成了牙轮外圆的粗、精NC加工，生成了CL刀具路径数据，同时完成了对粗、精加工两个序列的合并；通过本研究产生的CL文件经过NC post模块可生成数控机床的控制代码，从而可以缩短三牙轮钻头的设计制造周期，提高产品的设计质量，提高企业的技术创新能力和市场竞争能力。

If you can't resist a poloneck then throw a round-neck jumper or a chunky cardigan over the top to avoid being confused for a Milk Tray Man wannabe.

如果你不能忍受圆高领，那么放弃圆领上衣或者宽松的开领毛衫，这能最大程度上防止你和&送牛奶工&混淆起来。

Diamond ring effect 钻石环效应 Occurs during a total solar eclipse when only one baily's bead remains, or in practice, when a patch of sunlight can be seen at one side of the disk, resembling a diamond ring (this usually happens before baily's beads appear before totality or after baily's beads are formed after the end of totality).

通常於日全食前倍里珠出现末段和日全食后倍里珠出现前段发生。当只有一粒倍里珠在太阳圆盘时(实务上为光束只在太阳一面可见时)，该圆盘看上去就像环里突出一粒钻石般，因而得名。

The results show that the growth rate of overpressure, damage radius and penetrating depth in pace with charge mass is bigger as charge mass below is 200kg. The airplane load is big when airplane hangs medium caliber bomb. The best caliber of general purpose aerial bomb is 500kg.

结果表明装药为200kg以下时，炸弹爆炸时的超压、破坏半径和侵入深度随装药质量的增长率比较大，飞机挂载中圆径炸弹时的载弹量比较多，主用航空炸弹的最佳圆径为500kg。

Due to the long history of working together and Mr. D'Annunzio's proven business experience, the rotary screen printing company Stork Prints continues its partnership and will deliver Rotary Screen Integration?

由于合作先生和德Annunzio's证明业务的经验，圆网印花公司鹳打印继续其伙伴关系，将提供像以前一样，圆网集成？

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。