单词	ground speed
释义	ground speed noun : the speed (as of an airplane) with relation to the ground compare airspeed Example Sentences Recent Examples on the Web Pilots have punched out successfully from zero-zero attitude (no altitude, no ground speed) up to and through the sound barrier. Kevin V. Brown, Popular Mechanics, 17 June 2021 Ingenuity was commanded to climb to an altitude of 33 feet (10 meters) before translating 492 feet (150 meters) to the southwest at a ground speed of 9 mph (4 meters per second). Chris Smith, BGR, 29 May 2021 The current speed record was set in 2008 when a Bombardier Global Express jet made the journey at an average ground speed of 511mph. Eric Berger, Ars Technica, 1 July 2019 While that statistic would suggest that the Dreamliner crashed through the sound barrier (767 mph), that's not actually what happened: The plane reached a ground speed of 801 mph, but wasn't technically moving that fast at altitude. Sam Blum, Popular Mechanics, 19 Feb. 2019 Slow the mower’s ground speed—or your walking speed—to allow more thorough mulching action. Roy Berendson, Popular Mechanics, 27 Apr. 2018 The airship’s engines churned; its ground speed slowed. Eva Holland, Smithsonian, 18 Aug. 2017 See More Word History First Known Use 1917, in the meaning defined above
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