单词	optical normal line
释义	optical normal line 光学法线
随便看	surface water body surface water capacity surface water characteristic surface-water depth surface water drain surface-water drain surface-water drainage surface water environment surface water flowage surface water-repellent treatment surface water resoucres surface water resource surface water resources surface water resources amount surface-water rice soil surface waters surface water sampling Surface water seepage surface watershed surface water source surface water source heat pump surface water supply surface water system surface water temperature surface wavc survcy