工业泵。离心泵、混流泵和轴流泵。允许机械振动级。
Industrial pumps. Centrifugal, mixed flow and axial pumps. Allowable level for mechanical vibrations.
工业泵。离心泵、混流泵和轴流泵。允许的机械振动级。
Industrial pumps. Centrifugal, mixed flow and axial pumps. Allowable level for mechanical vibrations.
机脚振动级是评价机械设备振动特性的一项重要指标，是低噪声机械设备研制和验收的重要检测项目。
The seat vibration level is important for evaluation of the machinery quality in the research and development(R&D) of the low noise machine.
经管路模型试验和水泵机组试验证明，这两种隔振垫可使管路系统振动加速度级明显下降。
Through piping model test and pump unit trial it is shown that with the two types of isolating shims the vibration acceleration of the piping system can be reduced evidently.
本文将组成复合超声扭转振动变幅杆的每一级都等效为一四端网络，应用矩阵相乘使多个网络得到简化。
Every part of the compound ultrasonic torsional vibration horn is equivalent to a four -terminal network in this paper. Simplify the networks by multi-plying the matrices.
根据车用发动机的实际使用工况，在不同转速及爆发压力下对其进行动力学计算，得到发动机的表面振动速度级。
According to the actual operational condition of engine, calculate dynamics with different rotational speed and breakout pressure, and get the surface vibration speed stage of engine.
叶轮平衡：叶轮按ISO1940-2000，G6.3 级校准平衡，运行时振动小，大大提高了轴承和机封的使用寿命。
Impeller balance : impeller meets the criterion ofISO1940-2000, G6.3-level to calibration balance, little vibration, greatly improve the life of bearing and mechanical seal.
本文阐述了一种基于流体二维振动的原子级无损伤超光滑表面加工技术。
A novel polishing technique based on the two-dimension vibration of fluid is put forward to obtain ultra-smooth surface without damage.
实验表明，实验系统在隧道状态下对纳米级振动有很好的幅频响应。
Experiments demonstrate that the system has good amplitude-frequency response to the nano level vibration in the tunneling state.
二级分流式双圆弧齿轮减速箱结构参数对其振动特性有一定的影响。
The structure parameters have some relation with the vibration behaviors for the reducing box with two stage split flow Novikov gear of with double circular arc tooth profiles.
转子各级叶轮处的密封对转子振动的影响程度不同，以中间一级叶轮的影响最为显著。
The seals on different blades have different influence on the vibration of the rotor, and the seal on the middle blade has the most obvious influence on the rotor.
以某型航空发动机压气机第六级叶片为例，研究了温度对叶片振动频率的影响。
The 6th stage blade in aero-engine compressor is taken as an example, the temperature effect on the blade vibration frequency blade is investigated.
测试结果表明：该两级同轴式双环减速机传动效率达到96%振动方面也有所改善。
The test result indicated that the two-stage coaxial double-ring reducer reached an efficiency of 96% and is improved on the vibration.
每级叶轮后的转子轴处都装有一径向振动探头，线接至控制柜，为每级振动的显示、报警和停机。
One radial vibration probe positioned in " Y " plane for each rotor after impeller. For vibration display, alarm and shutdown, function wired to control panel.
对比分析不同激振情况下，踏面径向振动与辐板轴向振动对噪声声压级的贡献比例。
Compared of different contributions of the tread vibration and the web vibration on sound level of railway noise.
对侧装式调节级动叶的强度振动计算分析及其应用范围进行了介绍 ，并对部分进汽时进汽喷嘴的布置方法提出了建议。
The vibrational stress analysis and the application range of the side entry blade are introduced in this paper, and the suggestion of the nozzle arrangement is also given.
摘要：针对动叶可调双级轴流风机长期运行中叶片磨损造成转子质量不平衡，引起风机振动增大的问题。
Abstract: the vibration increasing of adjustable vane double-stage axial flow fan caused by the rotors mass unbalance for the vane abrasion in long period running is a main malfunction.
本文的主要研究内容是：通过分析STM对振动的敏感性，提出基于隧道效应的纳米级振动测试方法的设计。
The main contents in the dissertation are as follows:Analyzing the sensitivity to vibration of STM, putting forward the design of nano level vibration measuring method based on tunneling effect.
提出了基于振动成型的级配碎石设计指标及设计标准，并应用实体工程进行验证。
The design specifications and design standards of graded broken stone which are based on vibration molding are proposed, and their feasibility is verified through practical project.
在已知内层壳体振动速度的情况下，计算出流场中距外层壳体一定距离处的声压级。
The sound pressure level at certain distance from the outer shell in flow field is obtained when the vibration velocity of the inner shell is known.
得出，当激振点不变时，激振力级的变化与振动模态辐射的平均声压级成线性关系；
When the exciting force was constant the average level of sound radiation produced by modal vibration has a linear relationship with the level of mode shapes.
振动用加速度有效值描述，噪声以声压级表示。
The vibration is characterized by the virtual value of acceleration, and the noise is indicated by the sound-pressure-level.
用MLP方法求解一类同时具有二次和三次项的强非线性系统的自由振动问题，得到其二级近似解。
The Solutions of a kind of strongly nonlinear system with quadratic and cubic nonlinearities are derived by means of the MLP method, and its second order approximate solutions are obtained.
设计了基于隧道效应的纳米级振动传感器，该传感器具有很高的灵敏度和分辨力，并用设计的振动传感器进行了纳米级振动检测试验。
With high resolution and sensitivity, the nano-level vibration sensor based on tunneling effect is designed and vibration detection experiments are carried out.
利用二级LO声子的振动强度与一级LO声子的振动强度之比（2LO/LO），研究团簇电声子耦合强弱的结果表明，随着团簇尺寸减小，电声子耦合增强。
The electron-phonon coupling intensity are studied by 2LO/LO. When the size of CdS clusters decrease, the electron-phonon coupling will strengthen.
利用二级LO声子的振动强度与一级LO声子的振动强度之比（2LO/LO），研究团簇电声子耦合强弱的结果表明，随着团簇尺寸减小，电声子耦合增强。
The electron-phonon coupling intensity are studied by 2LO/LO. When the size of CdS clusters decrease, the electron-phonon coupling will strengthen.
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