查询词典 acoustic

The results show that the lateral acoustic pressure level is larger than the upside and the foreside of the wh.

结果表明，在1~3000 Hz的频率范围内，车轮外侧声压级大于车轮上部和前部的声压级，域点声压级随频率增加而增大。

The diesel engine's noise is measured by using the acoustic pressure method.

采用声压测量法对柴油机进行了整机噪声的测量，通过试验研究成功分离了发动机的燃烧噪声、机械噪声及进气噪声。

An analytic expression for the acoustic pressure in farfield are then obtained.

考虑弹性结构、可压缩流体和粘弹性消声瓦在交界面上的相互作用，然后给出了远场声压的解析表达式。

The influence of acoustic perturbation on the pressure oscillation of a premixed conical flame combustor is experimentally investigated.

研究表明，V形预混火焰的锋面皱褶的频率与声波扰动的频率相同，其幅值与声波扰动的频率成反比。

Coupling between combustion oscillations and acoustic pressure oscillations can lead to largeamplitude pressure oscillations within the combustor.

耦合振动和燃烧声压的振荡可能导致largeamplitude压力振荡的燃烧室。

And the acoustic pressure phase sensitivity frequency response properties are investigated in terms of theories, simulations and experiments.

实验结果验证了小尺度结(来源：ABCb5论5d文网www.abclunwen.com)构下水声低通滤波理论及模型的正确性。

No doubt, the more the information, the better the processing effect will be. The technology of acoustic pressure and particle velocity combined processing is expected to bring new life to the developments of signal processing of underwater acoustics and sonar technology, which is the main content of this thesis.

更多的信息量必然带来更好的处理效果，基于组合传感器的声压、振速联合处理技术有望给水声信号处理和声呐技术的发展带来新的活力，这正是本论文的主要研究内容。

Meanwhile, this paper attempts to identify the sound source by reconstructing surface acoustic pressure. After the simulation and visualization processing, the method is found to be simple and feasible.

同时，探讨通过重构声源表面声压的方法来识别噪声源，经过模拟计算和可视化的实现，表明方法简单可行。

The variation tendency of pulse pressure waveform along acoustic axis and in the focal plane has been numerically studied also.

同时还数值研究了脉冲压力波沿声轴和焦平面上的变化趋势，在幅度下降-6 dB的焦斑内没有观察到波形的明显变化。

Methods A hydrophone was used as energy converting equipment to collect wave of acoustic pressure in the field of ultrasound.

采用水听器作为换能器，通过采集超声信号在空间声场内一点的声压波形。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐