| 单词 | quarter circle |
| 释义 | > as lemmasquarter circle quarter circle n. the shape of a quarter of a circle; an arc describing a quarter of the circumference of a circle (cf. quadrant n.1 3); (also) a quarter of a revolution, ninety degrees. ΚΠ 1595 J. Davis Seamans Secrets ii. sig. H2v A quarter of a great Circle being drawne from the Pole, to the place whose Longitude is desired, and so continued to the Equinoctiall, that degree and minute in which the quarter circle dooth touch the Equator, is the Longitude of the same place. 1654 H. Phillippes Purchasers Pattern (ed. 2) 165 The half-Circle and quarter-Circle may be measured also by this rule, but other Sections are very hard and troublesome..without knowing the content of the whole Circle or Semicircle. 1853 J. H. Stocqueler Mil. Encycl. 114/1 If the battalion has been faced to the right, the men turn on this word a quarter-circle to the left. 1906 Official Handbk. Hockey Assoc. 120 In front of each goal shall be drawn a white line... This line shall be continued each way to meet the goal line by quarter-circles having the goal posts as centres. 2006 Hamilton (Ont.) Spectator (Nexis) 20 Jan. g16 Fold crepe in half over filling, then in half again to make a quarter circle. < as lemmas |
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