overlays重复占位程序段,重复占位段overlayv.覆盖；镀；铺…上面n.覆盖物；重叠；镀金overlaying welding procedure堆焊工艺overlaying welding materials堆焊材料overlay memory configuration覆盖存储结构Overlay and focus performance套刻和聚焦性能overlay relationship of basins盆地覆盖类型overlay of high-rise building高层建筑覆盖overlaying film between furrows垄间覆膜overlay access control register覆盖存取控制寄存器overlay management routine entry重叠管理程序入口overlaying-welding process method叠加堆焊法