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acoustical materials » acoustic materials, optical materials, critical materials
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elastic materials » plastic materials, viscoelastic materials, ceramic materials
acoustic material » acoustic materials, acoustic metamaterial, acoustic metamaterials
optic materials » optical materials, basic materials, ionic materials
acoustical materials » acoustic materials, optical materials, critical materials
22optical materials » optical materials, optical material, optics materials
elastic materials » plastic materials, viscoelastic materials, ceramic materials
acoustic material » acoustic materials, acoustic metamaterial, acoustic metamaterials
optic materials » optical materials, basic materials, ionic materials