| 单词 | radio altimeter |
| 释义 | > as lemmasradio altimeter radio altimeter n. an altimeter which works by emitting a radio signal and measuring the time it takes to be reflected back from the ground. ΘΚΠ the world > relative properties > measurement > measuring instrument > [noun] > for measuring altitude hypsometer1864 thermobarometer1864 altimeter1904 altigraph1914 radio altimeter1927 absolute altimeter1930 barometric altimeter1930 1927 Davenport (Iowa) Democrat & Leader 14 Apr. 19/3 The radio altimeter, soon to be developed, apparently, to record so delicately and correctly that safe landings can be made in fog. 1953 R. Chisholm Cover of Darkness i. xii. 123 My Mosquito had a radio altimeter, a device which gave absolute readings of height. 1991 Pilot Nov. 11/1 At 420 knots and with a ‘rad-alt’ (radio altimeter) height of 250 feet..we skim over Wrenbury and Hack Green. < as lemmas |
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