plane wave expansion meaning in English

平面波展开

In this paper , we present the analytical results of the total band gaps of sound waves in two - dimensional sonic crystals using the plane wave expansion method
声子晶体的频沟现象，可应用于彻体波滤波器或表面声波滤波器，阻止特定角度与频率入射的声子传递，藉以达成滤波之效果。
Using the plane wave expansion method , from the computation result for the band gaps structure of infinitd periodic one dimension phononic crystal , it is found the width of the first gap relates with the material portion ratio
利用平面波展开法，计算一维无限周期结构声子晶体的带隙结构，发现每一带隙的宽度与材料的组份比有关。
On computational methods in photonic crystal finite difference time domain method ( fdtd ) and plane wave expansion method ( pwe ) are widely used in calculation the dispersion relation of the photonic crystals
光子晶体计算方法的研究用于计算光子晶体的计算方法中，有限时域差分方法( fdtd )和平面波展开方法被广泛使用，我对这两种方法都有所研究，也有所突破创新。