查询词典 acoustic wave

The acoustic field of the pulse wave source is measured, the measuring value is in accordance with the calculating results on the whole.

对脉冲波声场的测试结果表明，数值计算和实测结果有较好的一致性。

According to this model, the dimensionless velocity potential of the incident acoustic field,(where, F is the velocity potential, v 0 the velocity amplitude of the vibration source, k =2 p / l the wave number), can be expressed as an integral equation over the surface of the levitator emitter and reflector, and then solved by the boundary element method.

该模型将入射声场速度势 F 的无量纲形式，（ v 0是声源振动速度峰值， k =2 p / l 是波数），表达为发射端和反射端表面上的边界积分方程，并通过边界元方法求解。

Entity modeling, recognition of vibration model, computation of amplitude magnification factor and wave node position and so on are solved in parameterization module during the course of large cross-section acoustic horn .

其中参数化模块解决了大截面变幅杆设计和分析过程中遇到的实体建模、振型识别、振幅比与波节点位置计算等诸多问题。

Powerful shock wave will break down the primary crystal and the growing dendrite, making them particle crystal. With the stirring of acoustic streaming, particle crystal is dispersed in melt, as is equal to increase the number of external nucleus.

强烈的冲击波会击碎初生晶体，使之成为破碎的晶核，在声流的搅拌作用下，又使其弥散地分布于熔池中，相当于增加了外来核心，因而使晶粒得到细化。

However, the continued wavefields in traditional one-way wave equation migration are not the downgoing or upgoing components of the acoustic pressure wavefields. The amplitudes on the migrated sections still disagree with the reflection coefficients even if the dynamic imaging condition is applied.

不过，传统单程波动方程偏移的延拓波场并不是全波场的上、下行声压分量，即使采用常规的动力学成像条件，得到的成像振幅与声压反射系数之间也没有直接联系。

The usual configurations of acoustic cavities are as Helmholtz resonators, or quarter-wave slots.

通常配置的声学腔作为赫姆霍兹共振器，或四分之一波插槽。

In contrast,the SAW and PSAW have Δv/v effect.These datashow that the high velocity surface acoustic mode is the high velocity head wave.

这些充分证明了，压电晶体半空间中普遍存在的高速表面模式是我们所预期的高速头波。

A 9 -Bit square lattice gas model with temperature was introduced. We fulfilled an acoustic driver using Monte Carlo Method. Using this driver to generate plane waves, a standing sound wave was established in a two\|dimensional pipe.

引入带温度的 9- Bit正方形格子气自动机模型，利用MonteCarlo方法模拟声源并激发平面波，在二维谐振腔中建立了声驻波场。

To raise the sound intensity of the modulated aerodynamic acoustic source in low frequency region, the resonances in two resonance pipes, a straight pipe and a bi-curved horn were tested by forcing the airflow of sound wave to pass through them.

为提高调制气动声源在低频处的发声强度，将含声波的气流通过直管和双曲喇叭两种谐振管产生共振。

Therelation between the circuit parameters and total radiation energy, acoustic energy of shock wave arealso presented in the paper.

计算结果表明，通道内的粒子数在1019的量级。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。