“materials with acoustic gradad index”的概念、定义、翻译、参考文献-科学参考

单词	materials with acoustic gradad index
释义	materials with acoustic gradad index Encyclopedia 理学声学超常材料释 materials with acoustic gradad index声梯度折射率材料一种非均质的复合材料，它的组分和结构在材料内部按一定规律连续变化，从而使折射率也相应地呈连续变化。
随便看	irrigation area irrigation areas in China irrigation canal system irrigation date irrigation development planning irrigation district management organization irrigation duty irrigation efficiency irrigation emitter irrigation engineering operation and maintenance irrigation experiment irrigation grass industry irrigation information irrigation law irrigation layout plan irrigation machinery irrigation management irrigation method and technology experiment irrigation mode of pasture irrigation principle irrigation program irrigation program experiment irrigation project management Irrigation Project of Spring Water in Ancient China irrigation projects planning

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