查询词典 eccentricity

The curvature radius and vehicle speed effects were analyzed based on the dynamic amplification factor of a curved-bridge considering the traveling eccentricity of vehicles.

内力和位移的动力放大系数对曲率半径的变化的敏感性各不相同，当曲率半径小于某个特征值后，动力放大系数变化很大。

When an axle journal is at a certain position in a bearing, the pad tilting angle is related to initial eccentricity and clearance ratio, but unrelated to speed, viscosity, etc.

当轴颈在轴承中位置一定时，可倾瓦块摆角只与原始偏心和间隙比有关，与转速、粘度等无关

, when the eccentricity is equal to zero, the arc centre of pad and the centre of axle journal are coincident, and the thickness of oil film is constantly C.

当偏心率为0时，如图5所示，瓦块圆弧中心与轴颈中心重合，油膜厚度恒为半径间隙，根据流体润滑理论，无动压效应，压力为0，瓦块摆角为零。

The results show that the pad tilting angle in static equilibrium is related to the structural parameters of pad, eccentricity of axle journal to pad, and elearance ratio, but is unrelatrd to the axle journal speed, viscosity of oil film, etc.

研究表明，瓦块静平衡摆角只与瓦块结构参数、轴颈相对瓦块偏心率，间隙比有关，而与轴颈转速、油膜粘度等无关。

It is clear that, when a tilting pad is in static equilibrium, the tilting angle is related to the parameters of pad, clearance ratio as well as initial eccentricity, and unrelated to the speed of axle journal, viscosity of oil film, etc.

可见，可倾瓦瓦块达到静平衡时，其摆角与瓦块参数、间隙比及原始偏心率有关，而与轴颈转速、油膜粘度等参数无关。

In this paper, set the balancing disk labyrinth seal in vibration test-bed for a large-type compressor rotor as research object, CFD method is adopted to analyze the internal flow field of 3-D labyrinth seal of rotating shaft under the condition of different relative eccentricity with constant speed and variable pressure difference and with constant pressure difference and variable speed.

以某大型压缩机转子振动试验台的平衡盘梳齿密封为研究对象，采用CFD方法，分析了转轴在不同相对偏心距下，定转速变压差和定压差变转速时的三维梳齿密封内部流场，总结了流场内部压力、速度和温度的变化规律。

This paper gives a brief introduction of research work on the fabrication measurement of rotation accuracy of machine tool main spindles. The following problems have been studied, stability of a new type base circle generator, mechanical method of eliminating eccentricities, precision fast eccentricity-regulating equipment, program of autosof tware for checking delaytime number for improving sampling accuracy and its au...

本文通过试验研究，讨论机床主轴回转精度工业测试的一些主要问题：新型基圆发生器的稳定性；机械消偏法及快速高精度调偏心装置；提高采样精度的自动软件检测延时数程序及自动定标技术；干扰的产生原因及消除方法；主铀的工业测试规范。

An experimental rig was used to analyze the oil film flow state of the journal and bearing block excitation. Oil film flow state in the course of changing eccentricity, excitation method, excitation force and frequency were studied.

5通过改造的轴承实验台，完成了轴颈同期涡动和轴承座振动对滑动轴承油膜流态影响的实验，对偏心率、激振方式、激振力和激振频率变化过程中的油膜流态进行观察和测试。

Based upon SIMPLEC algorithm of CFD analysis, air film flow in the oil-free air bearing is simulated to illustrate its working principle, as well as performance's influence from air compressibility, shaft eccentricity ratio, clearance size and rotating speed.

基于计算流体动力学中的SIMPLEC算法，从流动模拟分析的角度对动压气膜轴承的工作机理，包括气体可压缩性，轴承间隙大小，轴颈偏心率及轴承运行线速度的作用等作了分析。

For achieving large-scale space photoelectric tracking, the axis error of the new three-axis gimbal with collimation axis eccentricity was studied.

摘要本文分析了实现大范围空间光电跟踪的视轴偏心三轴跟踪机架的轴系误差。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。