声振耦合系统的有限元分析方法。
The numerical methods have been implemented in a finite element software system - JIFEX.
多旋流合成气预混燃烧热声振荡的起振过程是一种非线性分义过程。
The oscillation start process of multi-swirling premixed combustion is a nonlinear bifurcation process.
试验分析结果表明，声振技术在惯性仪表中的应用有着十分广阔前景。
Test analysis results have shown a promising potential of acoustic-vibration technique.
随着氢气含量的减少，起振临界当量比变大，热声振荡的最大振幅变大。
With reduced the concentration of hydrogen, the oscillation start critical equivalence ratio is higher and the maximum amplitude of thermoacoustic oscillation is larger.
目的探讨声振刺激试验(VAST)在产时估价胎儿宫内健康情况的作用。
Objective to assess the value of vibratory acoustic stimulation test (VAST) in evaluating fetal well-being in labor.
声振分析能从根本上弄清结构产生噪声的根源，从而有针对性地对噪声进行控制。
Sound and vibration analysis can fully identify the source of noise, thus controlling the noise accordingly.
通过声模拟实验和声振分析计算以及振动测量，研究了床头箱体在整机噪声中的作用。
Thereafter, with the sound simulation and the vibration measurements, the effects of the headstock on the noise of the lathe are studied.
为此参照等效质量原理对声振系统进行了激振试验，并对试验条件和试验方法进行了介绍。
Based on the principle of equivalent mass, it tests the impelling vibration in sonic wave vibration system, introduces the experiment condition and process.
首先，对现阶段常用于声振信号分析领域研究的各种时频分析方法的优缺点进行了分析和比较。
First, Discuss the advantage and disadvantage of some methods of time-frequency analysis usually used in the field of signal processing on sound and vibration.
从壳体基本运动方程出发，导出了弹性介质中的充液管道在轴对称运动下声振耦合系统的频散方程。
The dispersion equation of structure acoustic coupling system for fluid filled pipes surrounded by elastic media under axisymmetric motion was derived from shell dynamic equation.
依据激励方式的不同，本文分别从敲击检测以及声阻检测方法两个方面对声振检测方法进行了介绍。
In this paper, the acoustic impact testing method has been presented with two different excitation methods: the tap testing method and the acoustic impedance testing method.
根据相似理论设计制造了大型圆盘锯机模型，通过实验对模型锯片的声振特性进行了系统深入的研究。
Based on analogous Theory, the large sized disk saw machine model is manufactured. The sound and vibration properties of model saw blades are studied systematically and deeply via experiments.
指出可能是发生了声振不稳定燃烧压力峰造成的，并相应给出减小厨房天然气爆炸危害度的几点建议。
The disaster may be caused by unstable combustion pressure peak of sound vibration. Suggestions on how to reduce the explosion hazard in kitchen have been given.
这些风速计是使用热阻丝，声振、阻力球等来进行的，由于运用及其他方面的困难，所以不能普通地使用。
These anemometers, which employ hot wires, sonics, drag spheres, etc, are not commonly used because of operational and other difficulties.
笔者研究求解了航天飞行器仪器舱高频结构声振问题的统计能量方法，给出了用统计能量法计算的一般步骤；
The statistic energy method for solving high-frequency structural acoustic-vibration problem of high speed aero-craft is studied in this paper.
燃烧不稳定不仅影响航空发动机的工作稳定性，而且还是造成燃烧室火焰筒薄壁结构声振耦合疲劳破坏的重要原因。
Combustion instability not only affects the stability of the aero-engine work, but also caused the combustion chamber flame tube thin-walled structure acoustic-vibration coupled fatigue.
该文以一拖拉机驾驶室模型为研究对象，建立了其声振耦合的有限元分析模型，计算了该驾驶室模型的声学模态和声振耦合模态。
In this paper, a structural-acoustic model of a model tractor cab for finite element analysis was established, and the acoustic modal and the coupled structural-acoustic modal were analyzed.
新研究测试了近100个孕妇的胎儿对特殊刺激的反应，在这情况下，“声刺激”，一种有振波很低的声。
The new study tested how fetuses in nearly 100 pregnant women responded to a specific stimulus, in this case, a "vibroacoustic stimulation, " which is a very low sound that makes a vibration.
热声机械作为一种新型的能量转化装置，讨论其起振温差对于利用低品位能源具有非常重要的意义。
The onset temperature difference of thermoacoustic Stirling prime movers is a very important parameter for utilizing low quality heat energy.
在二维绝缘铁磁系统基础上建立了一个磁振子-声子相互作用模型。
A magnon-phonon interaction model was built in two-dimensional triangular insulating ferromagnet.
国外高档客车均采用浮筑地板，浮筑地板具有良好的减振、隔声性能。
High-grade passenger car abroad adopts floating floor with high performance of vibration absorption and sound insulation.
比较了纵向声子与横向声子对磁振子衰减的影响，也讨论了各项参数的变化对磁振子衰减的影响。
The influences of longitudinal phonon and transverse phonon on the magnon damping are compared, and the influences of the parameters are also illustrated.
如果施振温度过低，熔融合金粘度就会增大，致使声空化和声流效应发挥不了应有的作用。
On the contrary, when melt temperature is too low, the melt viscidity becomes intensive, so cavitation and acoustic streaming are in no effect.
列出常见和特殊的声、电磁噪声来源，严重的振颤，腐蚀源以及所有有可能影响正常测量的干扰因素。
List normal and special sources of acoustic or electromagnetic noise, serious vibration, sources of corrosion, and any other significant interfering parameter that might prevent successful measuring.
声矢量传感器是一种新型传感器，它可以空间共点，同时测量声场中的声压和振速信息。
The acoustic vector hydrophone is a new type sensor, which can simultaneously measure the pressure and particle velocity of the same point in acoustic field.
为了充分发挥热声发动机可利用低品位热能的优势，进一步降低系统的起振温度对热声热机的应用具有重要意义。
In order to take full use of energy of low quality, further decreasing onset - temperature of thermoacoustic engines may be an effective approach.
此理论将声场表示成各种表面弹性波-环绕波的再辐射的叠加，从波动的角度揭示声-振耦合机理。
The theory expresses the sound fields by a superposition of various surface elastic waves-circumferential waves and reveal the vibro-acoustic coupling mechanism in viewpoint of wave.
此理论将声场表示成各种共振再辐射模态的叠加，从振动的角度揭示声-振耦合机理。
The theories express the sound fields by a superposition of various resonance reradiation modes and reveal the vibro-acoustic coupling mechanism in viewpoint of vibration.
降噪材料按降噪机理可分为阻尼减振材料、吸声材料和隔声材料。
According to the function mechanisms, polymeric noise reduction composites were classified as vibration damping, sound absorption and sound insulation materials.
降噪材料按降噪机理可分为阻尼减振材料、吸声材料和隔声材料。
According to the function mechanisms, polymeric noise reduction composites were classified as vibration damping, sound absorption and sound insulation materials.
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