副道

Netease is advanced vice-president and have search controller Zhou Feng to say, ambulant reinforces the development trend that is search engine and even whole Internet future, have the purpose that rolls out mobile phone edition to depend on getting used to development direction of future.

网易高级副总裁暨有道搜索负责人周枫称，移动性的加强是搜索引擎乃至整个互联网未来的发展趋势，有道推出手机版的目的就在于适应未来的发展方向。

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。

In order to apply and popularize this technology in our country, on the basis of having received researches, this project has carried out some theory analysis and developed a double-faced stack mold, which can easily be turned into a single-face mold according to production task.

为了实现这项技术在国内的应用和推广，本课题在总结国内外研究成果的基础上，通过叠式热流道模塑的理论分析，研制了一副可由单层冷流道模具拓展成为双层叠式热流道的模具。

But the attention of every lady was soon caught by a young man, whom they had never seen before, of most gentlemanlike appearance, walking with an officer on the other side of the way.

不到一会儿工夫，这许多小姐都注意到一位年轻人身上去了。那人她们从来没见过，一副道地的绅士气派，正跟一个军官在街道那边散步。这位军官就是丹尼先生，丽迪雅正要打听他

Physical model of three-dimensional half axis rotor of 110 MW air inner-cooled turbo-generator was established, which included the rotor end, axial ventilation ducts and sub slot ventilation ducts. The rotating turbulence flow field was simulated numerically based on the finite volume method. The air velocity and flow rate distribution characteristics of the rotor end, axial ventilation ducts and sub slot ventilation ducts were analyzed.

建立110 MW空内冷汽轮发电机转子冷却通风道一个槽(包括端部、轴径向及副槽)的半轴向段三维物理模型，并基于有限体积法对该物理模型进行旋转湍流流场数值模拟，分析了端部、轴向段和副槽通风段的空气速度、流量分布特点。

In 1414 about two hundred of their number addressed a petition to the Council fo Constance, which thereupon granted to the friars of the stricta observantia regularis a special provincial vicar in every province, and a vicar-general over all, Nicholas Rodolphe being the first to fill the last-mentioned office.

在1414年约200其数量给了一份请愿书，安理会康斯，这随即给予修士的直observantia regularis特别省级副主教在每一个省，并副主教，一般对所有尼古拉鲁道夫首先填补最后提到的办公室。

Aidi injection has obvious cooperative effect in cooperating with chemotherapy in the curing of later period gastrointestinal malignance.

艾迪注射液联合化疗药物治疗晚期胃肠道恶性肿瘤有明显的协同作用，艾迪注射液在降低化疗药物的毒副反应、提高胃肠道恶性肿瘤患者的生活质量等方面均有显著的疗效。

In rotor's cooling duct of large turbo generators, the configuration parameters of sub slot, the number of winding's cooling ducts and center distance of them, and the diameter of slot wedge directly affect the flow and heat transfer characteristics of air in duct.

大型空冷汽轮发电机转子通风道中，副槽的几何形状、径向通风沟的条数及间距、槽楔出风口直径等几何量，直接影响风道内空气的流动及传热特征。

Coast zone is the sensitive belt of environment change. Under the influence both of nature and human being, the problem of resource and environment of coast zone is standing out increasingly.

中文题名潮汐汊道系统及环境响应副题名外文题名 The system of tidal inlet and the response to environment 论文作者陆培东导师刘泽纯喻国华教授学科专业自然地理学研究领域\研究方向学位级别博士学位授予单位南京师范大学学位授予日期2002 论文页码总数131页关键词海岸带海岸地貌潮汐汊道馆藏号BSLW /2003 /P737 /2 海岸带是环境变化的敏感地带，在自然和人类双重力量的影响作用下，海岸带的资源环境问题日益突出。

In the rotor winding ventilation system with sub-slot, the configuration parameters of sub slot, the distribution of winding's cooling ducts, and the diameter of slot wedge directly affect the flow characteristics of coolant in cooling ducts.

在转子副槽通风冷却系统中，副槽结构、径向风道分布、槽楔出风口直径等参数，直接影响转子风道冷却介质流动特性。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新