half-interval contour [测] 间曲线 ; 半距等高线 ; 半距等高线间曲线

supplementary half interval contour 间插等高线

contour interval [测] 等高距 ; 等高线距 ; 等高线间距 ; 等高线间隔

half interval contour 半距等高线

logarithmic contour interval 对数等值线距

structure contour interval 构造等高距

variable contour interval 不定等高线间隔

contour interval note 等高距注记

contour vertical interval 等高线间隔

contour r interval 等高距 ; 等高线间隔