查询词典 ring-pull can

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。

On the plain scan of CT, the appearances of the aneurysmal bone cyst were the various expansile changes. In destruction of bone, the capsular districts and septation can be seen. On MR T1WI and T2WI, we can see the low signal ring of the diseased region borderline, the diseased region bulk was full of fluid which has miscellaneous signals, it can be seen the low or slightly high signal. In the diseased region, the septation which have low signals both on the T1WI and T2WI can be seen.

在CT上动脉瘤样骨囊肿表现为溶骨性骨质破坏，常有不同程度膨胀性改变，骨质破坏区内可见囊状低密度区及骨性分隔，MRI表现为T1WI及T2WI上可见病灶边缘有低信号环，病灶内主体部分充满囊状液体，信号混杂，在T1WI低或中高信号，在T2WI上呈不均匀高信号，病灶内可见T1WI及T2WI上均呈低信号的分隔。

On this theory, a framework is designed which can change the spinal position but to fix the ring position to have a fixedness balloon heightness, through which the spinning tension can keep stability ,at the same time, all kinds problem during spinning course can be reduced and the yarn quality can be assured.

在这个理论基础上，我们设计了一套通过改变锭子位置而钢领板位置不变的装置来使气圈的高度不变，从而达到纱线张力的稳定，从而减少成纱过程中因为张力问题而产生的各种问题，减少断纱，提高了成纱品质。

To those philobiblic people, if think the person with world each district shares reading pleasure, do not lose beloved book again at the same time, you can choose to make " books prize ring ", such OK in the hand that guarantee can return host, although perhaps it can stay period of time on the road, more possible many more itinerary country, but final it or meeting return land setting out.

对于那些爱书的人来说，假如想与世界各地的人分享阅读的快乐，同时又不遗失心爱的书籍，你可以选择制作"图书标环"，这样就可以保证书能回到主人的手中，尽管也许它会在路上耽搁一段时间，更有可能游历多个国家，但最终它还是会回到出发地。

To those philobiblic people, if think the person with world each district shares reading pleasure, do not lose beloved book again at the same time, you can choose to make " books prize ring ", such OK in the hand that guarantee can return host, although perhaps it can stay period of time on the road, more possible many more itinerary country, but final it or meeting return land setting out.

对于那些爱书的人来说，假如想与世界各地的人分享阅读的快乐，同时又不遗失心爱的书籍，你可以选择制作&图书标环&，这样就可以保证书能回到主人的手中，尽管也许它会在路上耽搁一段时间，更有可能游历多个国家，但最终它还是会回到出发地。

Though it may be of lesser value than the white diamond, enabling you to purchase a higher carat black diamond, the warmth and beauty of a black diamond ring can surpass a white diamond ring.

虽然它可能是价值较低的比白色的钻石，让您购买更高克拉的黑色钻石，温暖和美丽的黑色钻石戒指可以超越白色钻石戒指。

Cause girl I've never been more sure (that baby, it's you) This ring here represents my heart And everything that you've been waiting for (just say "I do") Yeah, because I can see us holding hands Walking on the beach, our toes in the sand I can see us on the countryside Sitting on the grass, laying side by side You could be my baby, let me make you my lady Girl, you amaze me Ain't gotta do nothing crazy See, all I want you to do is be my love (So don't give away) My love (So don't give away) My love (So don't give away) Ain't another woman that can take your spot, my love (So don't give away) My love (So don't give away) My love (So don't give away) Ain't another woman that can take your spot, my love Ooooh, girl My love My love Shorty, cool as a fan On the new once again Still has fan from Peru to Japan Listen baby, I don't wanna ruin your plan If you got a man, try to lose him if you can Cause your girls real wild through your hands up high Wanna come kick it wit a stand up guy You don't really wanna let the chance go by Because you ain't been seen wit a man so fly Friend so fly i can go fly Private, cause I handle mine Call me candle guy, simply because I am on fire I hate to have to cancel my vacation so you can't deny I'm patient, but I ain't gonna try You don't come, I ain't gonna die Hold up, what you mean, you can't go why?

我和你男朋友我们不不是领带当我不是的时候，你说你 wanna 踢它如此高度好吧，宝贝我不是你的家伙是明显的不是 gon'谎言，我感觉你的空间但是忘记你的脸，我发誓我意志相同的标志，无论何处的相同子弹我寒冷仅仅带给机智我双，我意志我能看见我们把持手海滩上的步行，沙子的我们足趾我能在乡下地方之上看见我们草上的就坐，并排放置你可能是我的宝贝，让我使你成为我的淑女少女，你使吃惊我不是必须什麽也不做发狂的看见，我想要你做的全部是我的爱我的爱我的爱不是能带你的地点，我的爱另外的一个女人我的爱我的爱不是能带你的地点，我的爱另外的一个女人 Ooooh，少女我的爱我的爱

Abanazar took a gold ring off his finger and gave it to Aladdin. 'This ring is magic and can protect you,' he said. 'Be careful, and bring me the lamp quickly!

阿巴那扎尔从手上摘下一枚金戒指交给阿拉丁，&这枚戒指具有魔力，能够保护你，&他说，&小心点儿，尽快把灯带给我。&

Then, making use of the concept of eigenstate of polarization , the Jone's matrices of the coupler and the fiber are discussed in order to study the polarization state of the light in the resonator ring. The situation can be distributed into three kinds, two ESOPs are orthogonal, not orthogonal and only one ESOP exits, and each coincides to the special quality of the components in the ring.

其次借助偏振特征状态概念对偏振环中的光束偏振状态进行研究，从耦合器和光纤的琼斯矩阵着手，推导出表达偏振特性的公式，再将偏振情况分为三类，分别是两ESOP正交、不正交和只有一个ESOP，每一种情况都与组成光纤环的元件实际的性能相符。

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。

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。