Negative refractions of acoustic waves in sonic crystals have been studied in details.
系统地研究了声子晶体中复杂的声波负折射现象。
The propagation of acoustic waves in sonic crystals is analyzed by means of acoustic equi-frequency surfaces.
通过波矢空间等频线的方法来分析声子晶体中声波的传播。
These abnormal phenomena will definitely explore the study of sonic crystals, photonic crystals and quantum optics in photonic crystals.
这些效应相信会给声子晶体、光子晶体的研究，甚至光子晶体中量子光学的研究带来一些新奇的特征。
The most widespread of these known techniques is ultra sonic agitation with piezoelectric crystals, converting electrical energy into mechanical energy.
最广泛的技术是超声晶体震荡，将电能转化成为机械能量。
The most widespread of these known techniques is ultra sonic agitation with piezoelectric crystals, converting electrical energy into mechanical energy.
最广泛的技术是超声晶体震荡，将电能转化成为机械能量。
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