A new technique for picking the first S-Wave arrival is presented by multiplying energy ratio of the long window to the short window by the square of the amplitude envelope of waveforms in the paper.
提出了利用波形长短时窗能量比值与波形信号能量包络的平方乘积检测横波初至的新方法。
This method researches the echo envelope model which has been simplified in this paper under range wave and time excursion, and can compute the transmitting time more accurately.
该方法研究了幅度起伏和时间漂移条件下回波包络模型，并对模型进行了简化处理，可以更准确地计算超声波渡越时间。
And the envelope solitary wave solutions and envelope sinusoidal wave solutions have been obtained.
得到了该方程的包络孤立波解和包络正弦波解。
"Open it," Caleb said, looking at the envelope. "You have to collapse the wave function. But I'm sure it's an acceptance."
“打开吧，”卡勒布看着信封说，“你必须让波函数坍缩。但是我确信这是接受了。”
Shock wave and thermal load are the two main effects on the envelope during the discharge.
放电过程中，灯管主要受冲击波和热负载两方面的作用。
Shock wave and thermal load are the two main effects on the envelope during the discharge.
放电过程中，灯管主要受冲击波和热负载两方面的作用。
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