| 释义 |
superpose, v.|s(j)uːpəˈpəʊz|
[ad. F. superposer, f. super- super- 2 + poser to pose, after L. superpōnĕre (see superposition).]
1. trans. To place above or upon something else. Usually in pa. pple.; often loosely of two or more things in a vertical series (= placed one above or upon another).
1823tr. Humboldt's Geognost. Ess. Superpos. Rocks 90 A whitestone, which is superposed on the formation of granite and gneiss. 1843Civil Eng. & Arch. Jrnl. VI. 98/2 The column and trabeation in relief, and superposed upon the frieze and arch. 1867J. Hogg Microsc. i. i. 12 The object-glass was composed of three lenses superposed. 1904Brit. Med. Jrnl. 17 Sept. 656 A few parasites could be seen superposed or underlying a red blood corpuscle.
b. fig. (Also absol.)
1848M. Arnold Sonn. to Republ. Fr. contin. 10 Bursting through the network superpos'd By selfish occupation. 1855Lewes Goethe (1864) 52 They superpose ab extra, instead of trying to develope ab intra. Ibid. 53 His portraitures carry their moral with them, in them, but have no moral superposed. 1906Petrie Relig. Anc. Egypt xii. 78 Amid all the varieties of idea and bad readings superposed, the task of critical understanding is almost hopeless.
2. Physics, etc. To bring into the same position so as to coincide; to cause to occupy or co-exist in the same space without destroying one another, as two or more sets of physical conditions (e.g. undulations, light-rays, etc.), or one such in relation to another.
1831Brewster Optics xii. 105 The rings seen..will consist of all the seven differently coloured systems of rings superposed as it were. 1854Pereira's Polarized Light (ed. 2) 262 The two circularly polarized rays..will emerge superposed, and will compound a single ray polarized in a single plane. 1860Tyndall Glac. i. xiv. 95 Upon the large and general motion of the glacier, smaller motions are superposed. 1881Broadhouse Mus. Acoustics 178 One simple tone is thus superposed upon another.
b. Geom. To transfer (one magnitude) ideally to the space occupied by another, esp. so as to show that they coincide.
1870[implied in superposable]. 1885[implied in superposed 3]. |