| 单词 | spot level |
| 释义 | > as lemmasspot level spot level n. Surveying = spot height n.; also figurative. ΘΚΠ the world > the earth > earth sciences > geography > map-making > surveying > [noun] > datum for heights > spot height spot level1886 spot height1911 1886 Votes & Proc. Legislative Assembly New S. Wales 966 ‘Spot’ levels should also be taken at all the intersections of streets. 1908 N. F. Mackenzie Methods of Surv. x. 118 From these ‘spot levels’ the actual contour lines are sketched in by interpolation. 1958 Listener 20 Nov. 813/1 As the polls attempt a nationwide cross-section one would expect them to reflect the gradual development and movement of political opinion..more steadily and consistently than the spot-levels, so to speak, which are taken at by-elections, with all their variations of locality, candidate, and so on. 1974 W. H. Irvine Surveying for Constr. iii. 12/1 At present spot levels are shown to the nearest foot but with metrication the levels will be to the nearest 100 mm. 2004 P. Hymers New Home Builder iii. 52 The only way to be sure of the gradients is to undertake a levelling survey of your plot with spot levels marked out at strategic points. < as lemmas |
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