本文讨论了声学介质与弹性介质在单界面和多层介质情况下平面波反射系数的实质。
This paper deals with the essence of the reflection coefficient of planar wave in terms of acoustic and elastic media in the single-boundary and multilayered medium.
灰色系统关联分析法实质上是关联系数的分析。
The interrelated analysis law of grey system is essentially the analysis of interrelated coefficient.
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