文中还分析了有肋吸声结构声反射传递函数的变化。
The changes of the transfer functions of reflected sound waves were analysed in the case of absorption structure with ribs.
以简支矩形板为例，通过声辐射模态研究结构声辐射问题。
With an example of simply supported rectangular panel, this paper presents a new method for analysis of structure borne sound by radiation mode method.
力矩激励器是一种新型传感器，用于研究结构声转动自由度的特性。
The moment actuators, as a new transducers, are used to measure the performance of the structure borne sound on the rotational degrees of freedom.
水下加肋壳体的结构声问题在水下航行器隐身技术中有更广阔应用。
The structural acoustic problem of the ribbed shells in water is extensively applied in the hiding technology of the underwater navigation devices.
文章以简支平板为例，通过声辐射模态研究结构声辐射的有源控制。
In this paper, with an example of simply supported rectangular panel, it is presented active of control structure borne sound radiation by means of radiation modes.
利用声辐射阻力矩阵和振动面上的速度矢量预报了结构声辐射的总功率。
The acoustic radiation resistance matrix is combined with the velocity vector on a vibration surface to predict the total sound power radiated from the structure.
应用分配形有限元和边界元相结合的方法于含裂纹的结构声相互作用问题。
The mixed method of boundary element and fractal finite element is adopted to solve the cracked structure-acoustic coupling problems.
研究的结果为利用计算机构造虚拟结构研究结构声的方法提供了强大的例证。
It gives a positive example for studying structure-borne sound by using the method of computer simulation in constructing the virtual structure.
以简支平板为例，通过声辐射模态建立了弹性结构声辐射的有源主动控制策略。
Based on the radiation modes, it is presented an active control strategy for sound radiation from elastic structures with an example of simply supported rectangular panel.
本文研究了借助于系统地调控结构声传播性态以达到降低工程结构噪声目标的方法。
The paper discusses noise reduction in technical structures by means of systematically manipulating structure borne sound propagation.
水下结构声辐射和声传输的数值分析和主动控制研究，具有重要的理论意义和应用前景。
Numerical analysis and active control of underwater structural acoustic radiation and transmission are very important for achieving quiet submerged structures.
通过对该控制系统简化分析，从理论上探讨结构声自适应主动控制系统鲁棒性能及其最优实现问题。
The results show that main progress has been made towards controlling structurally radiated noise by adaptive active means applied directly to the vibrating structure.
本文综述了结构声传递的四种数值计算方法：统计能量分析、有限元法、阻抗分析法、波动分析法。
Four kinds of numerical computing methods for structure_borne propagation are summarized: Statistical Energy Analysis, Finite Element method.
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.
采用有限元与边界元耦合的方法，编写了相应程序对空调室外机箱的激励进行处理并对其结构声辐射进行了计算。
The structure-borne Institute noise sending out by outdoor cabinet of air conditioning is calculated using FEM/BEM and software both commercial and self-developed.
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.
研究了无限板上受点激励时阻振质量对结构声传递的阻抑，采用基于能量观点的隔振度来定义阻振质量的阻抑作用。
Vibration isolation mass attenuating transmission of the plate flexural wave is analyzed with the force excitation applied on an infinite plate.
在基于声辐射模态理论的结构声有源控制中，主导辐射模态的确定及抵消策略是至关重要的，它直接决定次级力源的优化布放及有源控制的效果。
In the active structural acoustic control based on radiation modes, the cancellation of the dominant radiation modes and determination of the arrangement of secondary forces are of virtual important.
这些（噪音）可以是穿透教室建筑结构的室外活动声、教学活动的声音以及室内产生的其它各种声响，这些声音都会因为房间的回声效果而被放大。
These levels come from outside activities that penetrate the classroom structure, from teaching activities, and other noise generated inside, which can be exacerbated by room reverberation.
每个晶体结构由相间的二氧化硅层和高分子聚合材料层组成，相同材料层之间的间距与声子的波长相匹配。
Each crystal structure consists of alternating layers of silicon dioxide and a polymer material, so that the spacing between similar layers matches the wavelength of phonons.
它涵盖对宇宙从最大的星系到亚原子粒子整个空间范围的研究，覆盖力学、辐射、热、电、声、磁和原子结构等等。
It encompasses the study of the universe from the largest galaxies to subatomic particles, covering mechanics, radiation, heat, electricity, sound, magnetism and the structure of atoms.
所得结果可以为预测复合材料结构的声疲劳寿命提供参考。
The results can provide references for forecasting acoustic fatigue life of composite structures.
薄壁结构的动力特性及动态响应分析是声疲劳分析以及寿命估算的基础。
Analysis of structural dynamic performance and response is the foundation to estimate fatigue life.
本文研究了夹层复合加筋板结构的振动声辐射特性。
The sound radiation of viscoelastic composite sandwich plates is researched in this paper.
NOC通过用鼻腔调整压力，在喷气孔拉伸一对类唇结构而发出“人”声。
NOC made these 'human' sounds by tweaking the pressures in his nasal cavity, and stretching a pair of vibrating lip-like structures within his blowhole.
这些改编作品在结构布局、多声思维、钢琴技巧与特色效果等方面呈现出不同于一般钢琴乐曲的艺术特征。
These adapted compositions show their specific characteristics different from other piano compositions in structure, multi - voice thinking, piano - playing skills and special effects.
由于其驱动信号是可以由结构简单的叉指电极激发的声表面波，因而克服了一般的超声马达结构复杂，制造困难以及小型化困难等缺点。
Because its driving signal is surface acoustic wave, thus it overcomes the shortcomings of complex structure, difficult fabrication and miniaturization in normal ultrasonic motor.
研究了含裂纹的弹性结构对声的散射作用。
The acoustical scattering by cracked elastic structures is studied.
研究了含裂纹的弹性结构对声的散射作用。
The acoustical scattering by cracked elastic structures is studied.
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