| 单词 | contour line |
| 释义 | > as lemmascontour line contour line n. a line representing the horizontal contour of the earth's surface at a given elevation; the contour line of a mountain at a given height represents the edge of a horizontal plane cutting the mountain at that height; a series of such lines at successive elevations laid down on a map shows the elevations and depressions of the surface. ΘΚΠ the world > the earth > earth sciences > geography > map-making > map > [noun] > line on map > contour or form line contour1840 contour line1844 form-line1935 1844 D. T. Ansted Geol. II. 238 The laying down on the maps a system of what are called contour-lines; by which is meant lines of equal altitude above a certain standard level. 1861 Times 7 Oct. An accurate map of his fields..with contour lines of level by which road-making, drain excavation, etc., may be laid out. 1878 T. H. Huxley Physiography (ed. 2) 14 Where the ground is very steep the contour-lines run close together. < as lemmas |
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