Defected ground structure (DGS) is a nonperiodic structure proposed in recent years, which means machining various shapes of etching on the ground plane.
即缺陷接地结构，它是近年来提出的一种在微波平面电路接地版上刻蚀出非周期形状的结构。
Specimens prepared by polishing and etching in a weak solution of nitric acid and alcohol reveal the lamellar structure of alternating plates that forms on slow cooling.
通过打磨并在弱硝酸酒精溶液中蚀刻制备的样本显示出由缓慢冷却形成的交互层状的薄片结构。
It has advantages of sample structure, low damage and anisotropic etching.
该装置具有结构简单，低损伤和各向异性刻蚀的优点。
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