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overlay metallizatio敷镀金属overlay segment area覆盖段区overlay partitioning覆盖网分割overlaying electrode堆焊焊条overlay track circuit叠加轨道电路overlay store address覆盖存储地址overlaying proportion覆盖比例overlay metallization敷镀金属overlay category axis[计] 覆盖图分类轴overlay interpretation叠合解释