| 释义 |
national grid
[f. national a. + grid.]
1. The grid (sense 8) that interconnects the major power stations and distribution centres in Great Britain; any similar grid in another country. Also transf.
1930Times 22 Mar. 19/2 There will be no great rush of new business consequent on the completion of the national ‘Grid’ system, as was contemplated in some quarters. 1943[see grid 8 b]. 1955[see grid 8 a]. 1967Times 13 Dec. 4/2 Mr. Wilson had said that comparative calculations were not possible for the gas industry, because there was not yet an equivalent of the national grid.
2. The metric co-ordinate system and reference grid used by the Ordnance Survey and printed on its maps, having a false origin west of the Isles of Scilly and a true origin at 2°W., 49°N.
1938Final Rep. Dept. Comm. Ordnance Survey (Ministry of Agric. & Fisheries) 4 We recommend that a National grid should be super-imposed on all large-scale plans, and on smaller scale maps, to provide one reference system for the maps of the whole of the country. 1952Proc. Prehist. Soc. XVIII. 3 The National Grid position on the 6-inch map Sheet XLIV, N.W. is 832642. 1963Atlas of Britain (Clarendon Press) map 1 The National Grid is used in this Atlas with the sanction of the Director General, Ordnance Survey and of H.M. Stationery Office; the Irish Grid is used with the sanction of the Ordnance Survey of Northern Ireland. 1969C. B. M. Lock Mod. Maps & Atlases i. 32 The Ordnance Survey maps are now prepared on the Transverse Mercator, which enables the National Grid reference system to be easily operated. 1971Nature 5 Feb. 375/1 A combination of these two surveys showed that before 1900 forty-four species..occurred in only one or two 10 km squares of the national grid; by 1930 the number was fifty-nine species. |