| 单词 | sinking speed |
| 释义 | > as lemmassinking speed sinking speed n. (a) the rate at which a mine shaft is excavated (now rare); (b) the speed with which a body sinks or is sinking; esp. the rate at which a glider loses altitude during flight. ΘΚΠ the world > movement > motion in a certain direction > downward motion > [noun] > downward component of gliding sinking speed1860 society > travel > air or space travel > action of flying (in) aircraft > navigation of course of aircraft > [noun] > speed sinking speed1860 air speed1909 land-speed1910 landing speed1911 flying speed1917 1860 F. Copcutt Leaves from Bachelor's Bk. Life 115 The pumping with hand-pumps was as a drop in the ocean. But the loss of the deck-load had sensibly decreased our sinking speed. 1914 Compressed Air Mag. Jan. 7076/1 The delays necessary in lowering and hoisting equipment, setting columns and mounting drills were considerable, and seriously affected the average sinking speed. 1923 tr. L. Prandtl Lessons of 1922 Rhön Soaring Flights (U.S. National Advisory Comm. Aeronautics: Techn. Memorandum No. 186) 1 It is a matter of common knowledge that soaring flight requires a glider with a low sinking speed, in order to obtain the utmost advantage from even small vertical wind velocities. 1996 T. Shi et al. in T. S. Golosinski & G. Yuguang Mining Sci. & Technol. 283/2 The classification of shaft depth will affect areas such as investment control in shaft projects..and the increase of sinking speed. 2003 R. M. Alexander Princ. Animal Locomotion (2006) x. 195 The sinking speeds shown are the minimum observed sinking speed for each airspeed. < as lemmas |
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