u型槽结构 u-type trough structure

u型槽旋喷桩 u type slot swivelling nozzle

深u型槽 deep u trench

U型槽贴片 U-slotted patch

双U型槽加载 double U-slot loading

U型槽刮板输送机 U-trough scraper conveyor

U型槽矩形贴片天线 U slot rectangle patch antenna

型金氧半导体结构U型槽 VMOSstructureU-grooveV