查询词典 persistent wave

The air pressure wave on the surface of train body in full-scale-test working state was calculated by numerical simulation computing, the frequency range of air pressure wave was estimated, and as a conclusion, the reasonable sampling frequency can be set in the range from 300 to 500 Hz.

通过分析实车测试工况下车体表面压力波的数值计算结果，估计被测空气压力波的频率范围，确定测试系统合理采样频率可设置为300~500Hz。

In this paper, we use Fourier transformation to analyse the spectrum of the finite-length harmonic wave train, and point out that the relationship between frequency width and continuance of a wave train obeys the indeterminate relation in quantum mechanics.

本文应用富里哀变换对有限长简谐波列进行了频谱分析，指出波列频宽与持续时间之间服从量子力学的测不准关系。

The proposed wave model is also extended to a point neighboring to the interesting point where the wave data were used to train the model.

并以此单站模式作为基准，应用此模式加以延伸於非学习测站之波浪推算，得到其相关系数约在0.76以上，平均误差值则为0.3米左右。

For diffusive Predator-Prey model with Holling-Ⅲ functional response without time delay, shooting argument together with LaSalle's Invariance Principle and the Hopf bifurcation theorem are applied to prove the existence of traveling wave solutions and small amplitude traveling wave train solutions.

在数学理论的研究中，行波解可以揭示方程本身的许多重要性质；在实际应用中，行波解可以很好的表现自然世界中的振荡现象。因此，对反应扩散方程行波解的研究具有非常重要的意义。

At the circumstance of low speed of flow, the standing wave resonances of protruding and trap cylindrical cavities are also studied. The distribution of sound particle velocity and pressure of the standing wave in cavity are analysed.

还进行了陷落式和突出式两种圆柱形腔驻波共振的研究，分析了驻波共振的声场分布，其频率公式与实验值符合很好。

The inspection for [3 改为of] wave trap combined the high frequency filter characteristics, is often judged by using to test the impedance of the wave trap, the echo depletion and the attenuation.

对阻波器、结合滤波器的高频特性检查，在实际应用中常采用测试阻波器的阻塞阻抗以及测量滤波器的回波损耗和工作衰减来判断好坏。

The viscoelasticity can cause energyattenuation, frequency dispersion, phase distortion of the seismic wave, and sometimes lead the seismic processing and interpretation based on the elastic wave theoryinto a risky trap.

粘弹性介质造成地震波能量衰减、频率发散、相位畸变，并使得一些基于弹性波理论的地震处理和解释技术面临踏进"陷阱"的危险。

Harmanic wave ; detection ; wave trap ; amplifier ; buffer ; driver

谐波；检波；陷波；放大器；缓冲器；驱动器

An S-wave arrival time detection method for wave velocity measurement in single-hole method is presented in this paper.

本文系统论述了单孔法剪切波速测量信号处理中的一种到时差识别方法。

It serves as the experiment basis for the wave-particle duality of materialb particles and the statistical explanation of a wave function.

它为实物粒子的波粒二象性和波函数的统计解释提供了实验依据。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。