| 单词 | bubble level |
| 释义 | > as lemmasbubble level bubble level n. [after French niveau à bulle d'air (1793 or earlier)] a levelling instrument in which the position of a bubble in a transparent fluid-filled tube shows whether it is horizontal; = spirit level n. ΘΚΠ society > occupation and work > equipment > equipment for marking out work > [noun] > level level1340 water level1563 leveller1693 spirit level1718 pendulum level1728 bubble level1814 Y level1845 striding level1878 1814 H. M. Williams tr. A. von Humboldt Personal Narr. Trav. II. 114 Giving a horizontal position to the azimuth circle, by means of a bubble level [Fr. niveau à bulle d'air] and a thread level. 1955 Sci. Amer. Jan. 96/2 The usual instrument used for locating the zenith is a transit, which relies on a plumb bob or its counterpart, the bubble level. 2009 J. Meehan Capturing Mood, Ambience & Dramatic Effects 140/1 Using a tripod with a bubble level installed in the camera's accessory shoe is a much more exact and controlled method than the handheld approach. < as lemmas |
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