The method in this paper, which can be used to calculate the interior sound field of arbitrary-shaped closed thin shell (equal or unequal thickness), suits a large scope.
本文所提出的这一方法适用面广，可以求出任意形状封闭薄壳(等厚度或不等厚度)的内部声场。
Suddenly, there was a great splashing sound and the oyster closed his shell and very quickly kept quiet.
突然，传来一声巨响，溅起无数水花，牡蛎马上合上壳，不作声了。
Through the border conditions of damping layer combined with the shell the coupled oscillation equation was solve, and radiation sound field expression was shown using the shell displacements.
通过阻尼层与壳体作用的边界条件求解流固耦合振动方程，解得辐射声场的表达式。
The sound radiation of a submerged finite double shell (two concentric cylindrical shells with the entrained fluid) is studied.
对双层壳体（壳间充满流体的同轴圆柱壳）的声辐射进行了研究。
Numerical results showed that if the shell was partially covered wi th a damping layer, its sound radiation would be greater than that of the ba re shell due to leak effect.
结果表明圆柱壳部分覆盖阻尼层后，由于声漏效应，壳体声辐射与光壳相比会增强。
I looked again. "Wood... but the spherical sound box is fashioned out of a whole coconut shell," I said, suppressing my surprise.
我重新审视了一下，“木头……不过球形的音盒是整个椰子壳做的。”我强压着自己的惊奇。
The sound heard by a listener when holding a seashell to his ear does not come from the shell itself. It is the echo of the blood pulsing in the listener's own ear.
将一只贝壳贴近耳朵，这时听到的声音不是贝壳本身发出的，而是听者自己耳朵中血流脉搏的回声。
This paper deals with the non-linear propagation of sound waves radiated by a thin spherical shell vibrating in ideal fluid.
本文研究理想流体中薄质球壳受激振动辐射声波的非线性传播。
Scab. An imperfection in the form of a shell or veneer, generally attached to the surface by sound metal. It usually has its origin in an ingot defect.
结疤。通常由钢锭缺陷引起的、附着在完好金属表面上的薄壳状或镶片状缺欠。
Numerical analysis of vibration and sound radiation efficiency from a submerged cylindrical shell has been carried out by using FEM methods, BEM methods and statistical energy methods.
利用有限元、边界元和统计能量分析方法并结合软件对圆柱壳体在流场中受激振动及声辐射效率作了数值计算分析研究。
Similarity rules were derived for a finite cylindrical shell, characterized by radiated sound power and radiation efficiency.
以水中有限长圆柱壳体为理论模型，用辐射声功率和辐射效率作为表征量导出了相似律。
Studies of the sound radiation and vibration of the ring stiffened cylindrical shell under the circumferential excitation are important to predict the noise of the underwater naval craft.
周向激励下加筋圆柱壳体振动和声辐射特性的研究是预测水下航行器壳体噪声的关键环节。
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.
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 part of gradient coil near shell forms chamfer Angle to lay more sound absorption material.
所述梯度线圈靠近外壳的部分形成倒角，以放入更多的吸声材料。
The vibration and sound radiation from a finite stiffened double cylindrical shell driven by a point force on the shell surface in the radial direction are studied in this paper.
分析了壳体的固有模态、激励力和声辐射三者之间的关系，这为用主动控制方法降低有限长加筋双层圆柱壳的振动噪声，提供了理论依据。
The auditorium is equipped with modern facilities such as LED, central air-conditioner, top-ranking acoustic shell, sound control room and light control room which are computer numerically-controlled.
会堂还配备电脑数控灯光控制室、电脑数控音效控制室和具有国际水准的反音罩。
The auditorium is equipped with modern facilities such as LED, central air-conditioner, top-ranking acoustic shell, sound control room and light control room which are computer numerically-controlled.
会堂还配备电脑数控灯光控制室、电脑数控音效控制室和具有国际水准的反音罩。
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