Arc
[ɑːk] or [ɑrk]
解释:
(n.) A portion of a curved line; as, the arc of a circle or of an ellipse.
(n.) A curvature in the shape of a circular arc or an arch; as, the colored arc (the rainbow); the arc of Hadley's quadrant.
(n.) An arch.
(n.) The apparent arc described, above or below the horizon, by the sun or other celestial body. The diurnal arc is described during the daytime, the nocturnal arc during the night.
埃莉诺手打
同义词及近义词：
n. (Geom.) Arch, part of a circumference.
整理:莱斯利
解释:
n. a segment of a circle or other curve.
海勒姆手打
例句:
- Because I saw it only looking out from under the blinds of a window in the house which stood on the corner where the arc light was. 欧内斯特·海明威. 丧钟为谁而鸣.
- And he was hoisted, first by the mechanism which was used to hoist the arc light but this broke-- 欧内斯特·海明威. 丧钟为谁而鸣.
- Until the beginning of 1882 there were only a few arc-lighting stations in existence for the limited distribution of current. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- The two pointed pieces of hard conducting carbon used for the separated terminals constitute the voltaic arc light--a light only excelled in intense brilliancy by the sun itself. 威廉·亨利·杜利特. 世纪发明.
- One early station in New York for arc lighting was an old soap-works whose well-soaked floors did not need much additional grease to render them choice fuel for the inevitable flames. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- It consisted of a graduated arc of soli d polished brass five inches broad, two inches thick, and with a radius of about six and three quarters feet. 李贝. 西洋科学史.
- Yet the very vogue of the electric arc light made harder the arrival of the incandescent. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- While the arcs with plain carbons are bluish-white, those with carbons containing calcium fluoride have a notable golden glow. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
- The use of electrical current in twelve principal cities in the United States was distributed in 1898 as follows: Lamps, arcs, and motors in sixteen candle power equivalents. Edward W. Byrn. 十九世纪发明进展.
- The brass connections on it were black with age and with the arcing effects of lightning, which, to young Edison, seemed particularly partial to Louisville. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
录入:西德尼