folded hose

用法例句

In order to study the energy band fold in phononic crystal superlattice,the plane wave expansion theory is been used to analyze the band structure of phononic crystal superlattice.

为了研究声子晶体超晶格的能带折叠现象,利用平面波展开法结合超晶胞方法分析了声子晶体超晶格的能带结构。