| 单词 | absolute altimeter |
| 释义 | > as lemmasabsolute altimeter absolute altimeter n. Aeronautics an altimeter which measures absolute altitude. ΘΚΠ the world > relative properties > measurement > measuring instrument > [noun] > for measuring altitude hypsometer1864 thermobarometer1864 altimeter1904 altigraph1914 radio altimeter1927 absolute altimeter1930 barometric altimeter1930 1930 Aviation Engin. Jan. 23/1 If an altimeter were available which gave distances above the ground instead of above a certain average ground pressure level, the pilot might use it as a navigation instrument... A number of such instruments, referred to as absolute altimeters, are now under development. 1932 C. C. Carter & C. N. Monteith Aerodynam. & Airplane (ed. 4) xi. 427 Three types of absolute altimeters for indicating the altitude of the aircraft above the ground over which it is flying..are being developed. 1938 Proc. IRE 26 848 An absolute altimeter utilizing a radio-wave-reflection method, has the following outstanding advantages. 1948 Astounding Sci. Fiction Oct. 27 These three [jets] are coupled directly to the same outlet valve, which is controlled by an absolute altimeter. 2003 J. F. Angier Ready or Not 100 Besides the radar equipment for navigating and bombing through clouds, it had an absolute altimeter, giving us the exact height above the ground. < as lemmas |
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