| 释义 |
orthographic, a.|ɔːθəʊˈgræfɪk|
[In sense 1, f. ortho- ‘straight, right’ + Gr. -γραϕος written, γραϕικός of or pertaining to writing. In sense 2, f. orthography + -ic: see -graphic.]
1. Applied to a kind of perspective projection, used in maps, elevations of buildings, etc., in which the point of sight is supposed to be at an infinite distance, so that the rays are parallel.
1668Phil. Trans. III. 892 The Orthographick Projection, by Perpendiculars falling from the respective Points of the Circles of the Spheare, on the Projecting Plain: Such a Projection, if the Plain be the Meridian, Ptolemy called the Analemma. 1796Morse Amer. Geog. I. 56 If the eye be supposed to be placed at an infinite distance, it is called the orthographic projection. 1802James Milit. Dict. s.v. Bridge, Elevation, the orthographic projection of the front of a bridge, on the vertical plane, parallel to its length. 1866Athenæum No. 2002. 339/2 The orthographic delineation of the skull. 1867Denison Astron. without Math. 11 That mode of projecting a hemisphere or any part of it on a plane is called the orthographic, because it shews the surface as it would be seen straight by parallel lines of sight from an infinite distance.
2. = orthographical 1.
1868Pall Mall G. 23 July, This last is likely to be modern, and to have got in through orthographic influence on speech among a generally cultivated..people. 1882–3Schaff Encycl. Relig. Knowl. III. 2568 There are some orthographic peculiarities; but in the main the Hebrew is pure. |