单词 | abney level |
释义 | Abney level in British English (ˈæbnɪ) noun a surveying instrument consisting of a spirit level and a sighting tube, used to measure the angle of inclination of a line from the observer to another point Word origin C20: named after Sir William Abney (1843–1920), British chemist and physicistAbney level in American English (ˈæbni) noun Surveying a hand level for determining elevations and angles of slope |
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