查询词典 outer

In the hypothesis, it is assumed that the photoreceptor outer segment is a cylindrical-like structure, while a photo enters the outer segment, the possibility of the impact between the photon and a photopigment molecule is maximal if the photon's travel path parallels to the axis of the cyclinder.

其理论系假设光感细胞的外节为一圆柱状结构，当光子进入到光感细胞的外节部分时，若其路径与此柱状结构的轴向平行，其碰撞到光色素分子的机率会最高，因此所产生的响应将最大。

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。

Meets down, black area senior official black Germany graceful leads human interspace formation with "star tyrant" the machine interspace formation launched the strength disparately actually to fill for the first time changes the technique the outer space to attack the war, really was makes one expect with difficulty, humanity's first large-scale outside outer space combat, was not and own, also was not and in any fable alien flying saucer fleet perhaps other outside living matter, but was and own pains creation robot combat, thinks really was some play color and own makes fun of own frustrates the feeling.

接下来，黑区长官黑德曼所率领的人类星际编队与"星霸"的机器星际编队展开了首次实力悬殊却充满变术的太空对攻战，真是令人难以料到，人类的第一次大规模外太空作战，不是和自己，也不是和什么传说中的外星人飞碟舰队或是其他地外生命物质，而是和自己苦心创造的机器人作战，啊，想想真是有些戏剧色彩和自己捉弄自己的挫败感。

Different from June, O.oratoria, as a single dominant species in weight, aggregated in outer water and formed single dominant species low H' values in outer waters in September.

无论是在6月还是9月，高密度区均出现在瓯江口洞头群岛外侧，特别是东南部受台湾暖流影响的海域。

Through the cold-state and simulation result, the special flow field of the burner can be obtained. It would be adjusting well when primary air nozzle adopting this form of inner-straight and outer-swirling. Inner straight can assure enough distance of jet, outer-swirling can entrain enough high temperature flue gas to burst into flame easily.

从冷态试验和数值模拟两方面可以得出这种燃烧器具有特殊的流场分布，一次风喷口采用这种外旋流内直流形式，兼有直流和旋流的两种特性，且具有很好的调节作用。

This steam temperature did not calculate too high, this time the human new outer space exposure suit already had the long time to resist 3000 degrees high temperature abilities, as for the steam formidable pressure also insufficient was worry, only was in this steam the unknown material whether had the danger, extremely anxious and puzzled, was good in them is the direct impact outer space, and is flung fast to the planetoid after death, otherwise density too Gao Huochang the time contact definitely could have some kind of unknown event.

这蒸汽的温度不算太高，此时人类新型太空防护服已经具备长时间抵御3000度高温的能力，至于蒸汽的强大压力也不足为虑，只是这蒸汽中未知物质是否具有危险，十分令人担忧和困惑，好在它们是直冲外层空间，并被快速地甩向小行星的身后，否则浓度太高或长时间接触肯定会发生某种未知的事件。

Everybody is whooping, time fast passing, Huang Qu senior official yellow Jinlong is wanting anxiously measured this kind of steam corrosiveness actually how, actually can'tfind the material in the bare planetoid surface which any may test, the returns control center, collects each material to come back to be able to waste the massive precious time, therefore then without hesitation stretches out own left hand,"thick outer space clothing glove which wears with the left hand, may probe the outer space exposure suit whether can resist this kind of unknown corrosion, if does not have the question, we might attack boldly!"

正在大家议论纷纷的时候，时间正在快速的流逝，黄区长官黄金龙急切地想测测这种蒸汽的腐蚀性究竟如何，在光秃秃的小行星表面却找不到任何可以测试的材料，返回指挥中心，收集各种材料回来就会浪费大量宝贵的时间，于是便毫不犹豫地伸出自己的左手，"用左手戴着的厚实太空服手套，就可以试探一下太空防护服是否能够抵御这种未知的腐蚀，如果没有问题，我们就可以大胆进攻了！"

Studies the effect of extraventricular wind speed at different heights on the thermal transfer coefficients for outer window s of high-rise buildings,establishes a formula for a variety of thermal transfer coefficients for outer window s at different heights.

为研究室外风速随着建筑物高度的变化，对高层建筑外窗传热系数的影响，参考已有文献导出了外窗传热系数随高度变化的计算公式，可用于各种外窗在任意高度下的传热系数计算，对于常用的木窗和钢窗给出300m以下的传热系数和传热系数高度附加率表，可供高层建筑外窗热负荷计算参考。

It tells about the tingling and creepage in one - way circuit equipment and analyses the cause of electrified outer covering (faradism、 creepage ),the difference of their normal and abnormal electrification,and ways to remove electrification in outer covering (meet cipher protect、earth protect).

介绍了单相用电设备的麻电和漏电现象，分析设备外壳带电的原因(两种情况：感应电，漏电)，外壳正常带电和非正常带电的区别，以及消除外壳带电的措施和方法。

The regulator pin structure is configured such that part of the outer end of a hairspring that is situated beyond a reformed portion of the hairspring along the outer circumference direction is freely fitted in a gap between the legs.

快慢针结构这样设置：沿着外圆周方向，远离游丝矫正部分设置游丝的外端的部件活动地装配到两个腿之间的间隙中。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。