抛物线方程（PE）是波动方程的一种近似形式，它假设电磁波能量在沿着抛物线轴向的锥形区域内传播。
The Parabolic Equation method (PE) is an approximation of the wave equation, which models energy propagating in a cone centred on a preferred direction, the paraxial direction.
能量的传播是弹性波的一个重要特征。
The energy transmission is one of the important characteristics of the elastic wave.
海洋内孤立波是一种携带巨大能量的特殊内波，它能够在海洋中长距离传播而保持波形基本不变。
Internal solitary waves are a kind of special internal waves, which could bring enormous energy and propagate long distance in the ocean with its wave form basically unchanged.
掌握瑞利波在分层地基中的传播和能量分布特征是进行瑞利波勘测的关键。
Transmission and energy distribution characteristics of Rayleigh waves in layered ground were important for Rayleigh wave test.
掌握瑞利波在分层地基中的传播和能量分布特征是进行瑞利波勘测的关键。
Transmission and energy distribution characteristics of Rayleigh waves in layered ground were important for Rayleigh wave test.
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