| 单词 |
rotative |
| 释义 |
rotative, a.|ˈrəʊtətɪv|
[f. L. rotāt-, ppl. stem of rotāre: see rotate v. So F. rotatif, -ive.]
1. Rotating, turning round like a wheel; acting or operating by circular motion.
1778Pryce Min. Cornub. 313 He completed both a reciprocating and a rotative or wheel engine. 1799Repertory Arts X. 295 How, by means of a rotative saw, to shape a piece from the rough. 1822New Monthly Mag. VI. 267 By means of rotative machinery, connected with..a steam-engine, or other rotative power. 1877Encycl. Brit. VI. 499/2 No rotative engine had yet been erected at Manchester.
b. Produced by rotation; producing, connected with, rotation.
1823P. Nicholson Pract. Build. 443 Mouldings, which may be generated by planes carried round their axis' in those planes, are called rotative mouldings. 1824W. Taylor in Monthly Rev. CIII. 193 He first advanced..the rotative doctrine. 1879Newcomb & Holden Astron. 211 The rotative forces acting on A and B are as it were distributed.
c. Of the nature of rotation.
1846Holtzapffel Turning II. 522 The general practice..is to give the tool a constant rotative shuffling motion. 1868Lockyer Elem. Astron. §359 As the Earth's rotative movement is uniform.
2. Acting or coming in rotation; recurrent.
1813T. Busby Lucretius II. v. Comm. p. xxv, By the rotative course of nature [the earth] is now enabled to bring forth some things which she did not yield at her beginning. 1864R. A. Arnold Cotton Famine 372 Cotton was cultivated in India as a rotative and not as a special crop. |
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