This paper analysis the acoustic principles of noise barriers, discuss the transmission, reflection and diffraction of the noise barrier, and the influencing factors of the three transmission routes.
本文从分析声屏障的声学原理入手，探讨声屏障的透射、反射和绕射机理以及对这三种传播途径的影响因素。
The results of double crystal X, ray diffraction measure of typical double barrier RTD material were given.
用X射线双晶衍射仪扫描并分析了典型双势垒RTD样品的衍射摇摆曲线；
The results of double crystal X, ray diffraction measure of typical double barrier RTD material were given.
用X射线双晶衍射仪扫描并分析了典型双势垒RTD样品的衍射摇摆曲线；
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