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acoustical materials » optical materials, critical materials, classical materials
22optical materials » optical materials, optical material, optic materials
acoustic materials » acoustic metamaterials, plastic materials, elastic materials
acoustic material » acoustic metamaterial, acoustic metamaterials, plastic material
acoustical materials » optical materials, critical materials, classical materials
22optical materials » optical materials, optical material, optic materials
acoustic materials » acoustic metamaterials, plastic materials, elastic materials
acoustic material » acoustic metamaterial, acoustic metamaterials, plastic material