滤光镜，电极，晶体管，液晶体本身以层状放置在一片薄玻璃板上，上面还盖着另外一片玻璃板，这类似于三明治的结构。
Layers of material which work as filters, electrodes, transistors and the liquid crystal itself are deposited onto a thin glass plate to form a sandwich that is covered with another pane of glass.
目的：通过临床手术，观察后路经椎板间隙入路显微内镜下治疗腰椎间盘突出症术中联合使用玻璃酸钠和地塞米松疗效并探讨其作用机制。
Objective: To study the therapeutic effect and mechanism of post-trans-vertebral plate interspace operation under microscopy combined with sodium hyaluronate and corson during lumbar disc protrusion.
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