本文分别讨论了机械波、电磁波、物质波在两种介质的分界面正入射传播时产生半波损失的本质。
In this paper, we discuss the nature of half-wave loss about mechanical wave, electromagnetic wave and matter wave respectively.
用该方法实现弹性波正演模拟只要算子半长度取到4—6，每波长取3个采样点即可获得精度很高的波场值。
The operator half length takes to 4-6 and each wave length takes 3 sampling, then the precise wave field can be obtained.
这使得SCR来控制交流正波的一半，另一半的电压施加到在SCR初始触发该负载。
This permits the SCR to control only half of the AC positive wave; half voltage is applied to the load when the SCR initially fires.
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