- 更多网络例句与量油计相关的网络例句 [注：此内容来源于网络，仅供参考]
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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。
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Error reduction can be achieved by improving the precision of flow meter, thermometer, water cut meter and densimeter,by reducing sample oil's deviation,and by correcting flow met...
要减少油量计量误差，就必须提高流量计、温度计、含水仪、密度计等仪表的准确度，减少所取油样的密度与含水率在某段计量时间内的非代表性平均值所引起的误差，用流量计系数来修正流量计的示值。
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At present, we are able to provide such motorcycle parts as chain wheel, chain, brake shoe, clutch cover, ignitor, rectifier, relay, high pressure bag, magnetic motor coil, belt, shock absorber, moulding, air valve, valve guide, camshaft, timing chain, spark plug, rocker arm, piston, piston ring, start disc, bearing, oil tank cover, lock set, steering bearing, oil meter, filter, horn, drive plate, driven wheel assembly, buffer rubber, intermediate shaft sleeve, starter motor, spoke and switch button etc.
目前，本公司有以下多个摩托车系列：链轮、链条、制动蹄、离合器压盘点火器、整流器、继电器、高压包、磁电机线圈、皮带、减震器、压条、气门、导管、凸轮轴、时规链、火花塞、摇臂、活塞、活塞环、启动盘、轴承、油箱盖、套锁、转向轴承、油量计、滤清器喇叭、驱动盘、从动轮总成、缓冲胶、中轴套、启动电机、辐条、开关按纽等。
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The oil level gauge makes it easy to check the level and the quantity of oil.
人眼是最好的感测器，油位计使得监测油量更容易
- 更多网络解释与量油计相关的网络解释 [注：此内容来源于网络，仅供参考]
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Jauge Carburant：油量表,油位计
-Recervoir Carburant 油箱 | -Jauge Carburant 油量表,油位计 | -Pompe Carburant Immergee 沉入式油泵
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dipsomaniac：嗜酒狂 (名)
dipsomania 耽酒症; 饮酒狂 (名) | dipsomaniac 嗜酒狂 (名) | dipstick 量油计 (名)
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light oil：轻质油
由1994年第19号第12条修订)"轻质油"(light oil) 指以量计不少于50%在不超逾摄氏185度的温度下蒸馏的碳氢油,或不少于95%在不超逾摄氏240度的温度下蒸馏,或按政府化验师订明的方式进行测试时在低于摄氏23度的温度下会发出易燃蒸气的碳氢油;
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ohm meter：电阻表;欧姆表
nozzle meter 喷嘴流量计 | ohm meter 电阻表;欧姆表 | oil meter 量油计
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dipteral：双翅类的/有双廊的
dipstick /量油计/ | dipteral /双翅类的/有双廊的/ | diptych /双折的记事板/双折的画/
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oiltight pitch：油密节距(铆接)
44 油舱,油柜 oil tank | 45 油密节距(铆接) oiltight pitch | 46 油表油量计 oil meter
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oil gauge stick：量油棒
oil gauge rod 量油杆 | oil gauge stick 量油棒 | oil gauge 油量计
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oil gauge：油量计, 油位表
lash down 捆紧, 扎牢 | oil gauge 油量计, 油位表 | pulmonary tuberculosis [医]肺结核
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oil gauge：油量计
oil gauge 油类相对密度测定计 | oil gauge 油量计 | oil gauge 油位表
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oil mill：榨油机,榨油工厂
油量计 oil meter | 榨油机,榨油工厂 oil mill | 采油(油田) oil mining