appreciate nature

与appreciate nature相关的网络例句 [注：此内容来源于网络，仅供参考]

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。

I appreciate Mr Paul,he inspired me in my despair in silence and supported me through that tough trip, I appreciate Mr Lee, her presure ignited my determinition,though she made so many trouble to me ,I got plenty from her, I appreciate New times inc,such a team urged me abandoned post whitch I have not courge abandon,under circumstances without outlet,I got an ideal job, I appreciate guy who striked me in Spring whitch should be a romantic season,he let me know what is truth and how to chose my couple and showd me his nature.

我感谢MR Paul，在绝望中他无声的启发我，支持我走过那段艰难的旅程，我感谢李锦花，她的压力激发了我的斗志，尽管她给我制造了麻烦，我还是在她那里学到最多，我感谢新旭那样的团体，他们逼迫我放弃了我不能果断放弃的鸡肋，在被动的破釜沉舟的环境下我找到目前我认为合适的位置，我感谢那个在本应烂漫春天里给我浇下一盆雪水的家伙，他让我明白什么是现实和怎样选择人生伴侣，并坦诚的让我看清一个人的本质。

In human's nature, He deduced that human's nature is good through following "nature of universe" and "nature of temperament" of Confucian philosophy of The Song and Ming dynasties, which provide possibility for moral cultivation. Later he divided human's nature into essential nature 、 assistant nature and irrelevant nature., which provides foundation for benefaction and vice, also indicate necessity, exterior and interior conditions.

在人性论上，他沿用宋明道学家的"义理之性"和"气质之性"的范畴推出了抽象的人性善的结论，为道德修养提供了可能，随后，又将现实的人性分为正性、辅性和无干性，为现实的善行和恶行找到了根据，为道德修养指出了必要性以及为道德主体创造了内在和外在的条件。

与appreciate nature相关的网络解释 [注：此内容来源于网络，仅供参考]

to appreciate the nature, soaking up all the beauty：欣赏大自然,吸纳一切美丽

to play with chidren, nurturing your inner child 与孩... | to appreciate the nature, soaking up all the beauty 欣赏大自然,吸纳一切美丽 | to feel the warmth of the sun, glowing upon your skin 感受太阳的...

to appreciate the nature, soaking up all the beauty：欣喜大自然,吸纳一些美丽

To play with children,nurturing your inner child,与孩... | To appreciate the nature ,soaking up all the beauty,欣喜大自然,吸纳一些美丽, | To feel the warmth of the sun,glowing upon your skin,感受太阳的...

appreciate the scenery of nature：欣赏大自然的风景

1 欣赏大自然的风景 appreciate the scenery of nature | 2 培养公德心 cultivate the public mindedness | 3 维护健康 maintain health

appreciate trap scenery of nature：赏析大自然的风景

1 赏析大自然的风景 appreciate trap scenery of nature | 2 培养公德心 cultivate trap public crOhioeedness | 3 MAIntenance康健 connectedtain health

to appreciate the scenery of nature：欣赏大自然的风景

1 欣赏大自然的风景 to appreciate the scenery of nature | 2 培养公德心 to cultivate the public mindedness | 3 维护健康 to maintain health