从理论上分析高频纵向超声导波在埋于无限大介质中钢杆传播的特性。
Propagation characteristics of longitudinal ultrasonic guided waves of steel rod embedded in infinite medium are studied in theory.
光在不同介质中的传播特性不同，大气和海水折射率的差别是影响激光传输的决定性因素。
Transmission characteristics of light beam in different media are distinctive. Difference of refractive index of air and seawater is a determination factor that affects laser transmission.
本文根据电磁波的传播特性，研究在涂型层状介质中传播规律。
Based on the propagation Characteristics of electromagnetic wave, the propagation law is studied in the Precoat layered media in the article.
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