| 释义 |
altimeter|ˈæltɪmiːtə(r), ælˈtɪmɪtə(r)|
[f. L. altimeter (quoted by Ducange from Papias), f. L. alti- high + Gr. µέτρον a measure.]
1. ‘An instrument for taking altitudes geometrically.’ Craig 1847.
2. A form of aneroid barometer which indicates the altitude reached, esp. in aviation. Also attrib. See also radio altimeter.
1918‘Boyd Cable’ Air Men o' War 179 His altimeter showed him to be a bare couple of hundred feet up. 1923Blackw. Mag. July 10/1 His altimeter needle crawled down from nine to eight thousand feet. 1950Gloss. Aeronaut. Terms (B.S.I.) i. 40 Altimeter calibrator, an apparatus for measuring the instrument errors of an altimeter. Contacting altimeter, an instrument in which electrical contacts are made or broken at a predetermined height. Ibid. 41 Recording altimeter, an instrument by which variation in height is recorded against time. |