| 单词 | flying hour |
| 释义 | > as lemmasflying hour flying hour n. (see quot. 1956). ΘΚΠ society > travel > air or space travel > action of flying (in) aircraft > [noun] > time spent in flying time1614 flight-time1881 flying hour1918 1918 F. H. Colvin Aircraft Mech. Handbk. xxii. 305 To keep all the available machines of one squadron in commission for 800 flying hours. 1956 W. A. Heflin U.S. Air Force Dict. 214/1 Flying hour, an hour spent in flight (which includes takeoff and landing) by a person, aircraft, or piece of equipment. < as lemmas |
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