您要查找的是不是：
- Noise radiation is limited by control of the output current slew rate. 控制输出电流上升速率可限制噪音。
- To predict the rail s noise radiation, the receptance analysis model of the track system is built in this thesis. 为了预测钢轨辐射的滚动噪声,本文建立了轨道系统模型计算钢轨的导纳,在模型中,钢轨采用三维实体单元模拟,轨枕采用弹性梁单元模拟。
- Vibration isolating theory is adopted as a measure of reducing diesel engine's noise radiation. 介绍了隔振作为柴油机降噪方法的基本原理,描述了该方法实施的基本步骤。
- It is also shown that the MBEM is expected to have good prospect in the movable boundary problem of noise radiation. 作者认为混合边界法在处理这类动边界声辐射问题上有着很好的应用前景。
- On the basis of the theory of vehicle-track coupling dynamics and noise radiation and propagation, mechanism of wheel/rail noise is analyzed. 根据车辆-轨道耦合动力学理论及声辐射与传播理论，分析了列车运行过程中产生轮轨噪声的机理。
- Vibrations of the tire surface due to road impact excitations cause noise radiation in the frequency band typically below 500 Hz. 振动轮胎表面由于道路造成噪音影响激发辐射的频带通常低于500赫兹。
- One of the effective solutions to the suppression of noise radiation from the water piping system is to install silencers. 在水管路系统中,安装水消声器是降低管路系统辐射噪声有效方法之一。
- The results show that the main noise source is the fuel cell auxiliary system while roof panel and rear quarter panel are the key parts contributing to noise radiation. 其总布置和噪声源有别于传统汽车，为了提高乘坐舒适性，很有必要研究其振动噪声特性。
- The noise radiation of internal combustion engine block was calculated by multi-body system simulation (MSS), finite element method (FEM) and boundary element method (BEM). 摘要结合多体动力学仿真技术与有限元法(FEM)和边界元法(BEM)对一台4缸发动机的机体噪声辐射进行了预测。
- Secondly, research development of noise control is analyzed and theory research of noise radiation, noise measurement and noise resource diagnosis, CAE, research of numerical value and visual analysis, noise active control are described in this paper. 接着，分析噪声控制工程的研究进展，提出噪声辐射理论研究，噪声测试与声源诊断，CAE、数值化与可视化研究，噪声的主动控制技术。
- The method mentioned in the article is to measure the vibration of the surface of the machinery and noise radiation in the air so that the noise decibel of the machinery can be precisely determined. 本文阐述了一种能在生产现场条件较差的情况下测定其机电产品噪声值的较为理想的方法,即用测量机电产品表面的振动量来确定空气噪声辐射,从而比较精确地测定其机电产品的噪声值。
- All above is of significance to the prediction and control of noise radiated from underwater structure. 这对于水下结构辐射噪声预报以及噪声抑制具有重要意义。
- This paper also investigated the influence of the zero vector and PWM switching frequency on the acoustic noise radiated by induction machine. 选择适当的PWM开关频率能有效地降低电机的噪声·
- In order to reduce the chance of exposure and increase the compaign capability, we need to lower the noise radiated form the warship. 为了降低舰船被暴露的几率,增强其作战的性能,需要使舰船辐射的噪声越低越好。
- Power Bus Noise Radiation Algorithm 总线噪声发射电磁干扰
- A loud noise from the street diverted my attention. 街上一阵喧闹声转移了我的注意力。
- Lead aprons shield people from radiation. 铅做的工作裙可使人免进辐射。
- The noise awoke her from her revery. 这声音把我她从沉思中惊醒。
- That noise is driving me frantic. 那种噪音真要把我弄疯了。
- The thick walls deadened the noise from the street. 这道厚墙隔绝了街上的噪音。
