1.
Study on propagation velocity of stress wave and ultrasonic wave transmitting on indefectible cross section of standing trees
立木无缺陷断面应力波与超声波传播速度比较
2.
According to certain research, the spread velocity of sound waves has nothing to do with the speed of the ripples.
研究表明, 声波在同一介质中的传播速度和波源的速度无关。
3.
Like light waves, acoustic (sound) waves are characterized by a frequency, wavelength and propagation speed.
声波就和光波一样，是以频率、波长和传播速度为其特徵。
4.
Study on Ultrasonic Propagation Characteristics and Noise Reduction Methods in Rod;
杆中超声波传播特性及降噪方法研究
5.
Study of ultrasonic propagation characteristic in near-critical CO_2
近临界CO_2中超声波传播特性研究
6.
The Experiment Design of PC-Aided Measurement of Sound Wave Propagation Velocity through the Air;
用PC机辅助测量声波在空气中的传播速度实验设计
7.
For large wavelengths, the velocity is constant.
对于长波长的波，传播速度是常数。
8.
All these indicate that the acoustic wave velocity in granite samples is affected by several extrinsic factors and some rules may be found.
实验结果表明，声波在岩石内传播速度受很多外在因素影响，并具有一定的传播规律。
9.
Electromagnetic waves travel as fast as light.
电磁波传播的速度和光一样。
10.
Analysis of Speeds of Neuronal Waves
神经网络中行波的传播速度分析(英文)
11.
That is more than two times the speed of sound.
比声音的传播速度快两倍还多。
12.
Just how fast does sound travel through the air?
声音在空气中的传播速度究竟有多快？
13.
In water sound travels nearly five times as fast as in air.
声音在水中的传播速度几乎是在空气中传播速度的五倍。
14.
The phase velocity basically tells you how fast a pure sine wave( with a single frequency) moves.
相速度可以告诉我们一个纯正弦波的传播速度。
15.
Research on Measurement of Ultrasonic Transit Time Based on Sing-around Method;
基于回振法的超声波传播时间测量方法研究
16.
The Mode of Lamb Wave Transmitting in Thin Aluminum Alloy Plate
超声兰姆波在铝合金薄板中的传播模式
17.
Propagation Characteristics of Ultrasonic Surface Wave in Hydrogen Attacked 430 Stainless Steel
氢蚀430不锈钢中超声表面波的传播特性
18.
Weak Nonlinear Evolution of Small Amplitude Disturbances in 2D Supersonic Boundary Layer
小扰动在二维超声速边界层中的弱非线性传播