1.〈外〉(图上表示阴影的)影线;(地图上表示山岳的)蓑状线
1.用蓑状线画
1.a short shading line, usually one of a group of such lines drawn in parallel, used on a map to indicate the direction and steepness of a slope
1.Group reaction hachures of a relief feature
地貌晕线