| 释义 |
ˌheavier-than-ˈair, attrib. phr. Aeronaut.
Designating a flying-machine whose weight is greater than the weight of the air which it displaces, and whose lift is not dependent on light gases; also applied to the use of such a machine or machines in flight.
[1870tr. Marion's Wonderful Balloon Ascents ii. ix. 162 To form a ‘Free Association for Aerial Navigation by means of Machines heavier than Air’. 1879Encycl. Brit. IX. 309/2 Weight, however paradoxical it may appear, is necessary to flight. Everything which flies is vastly heavier than the air.] 1903Westm. Gaz. 18 Sept. 9/3 The only example of the heavier-than-air machine. [1904Chambers's Jrnl. 1 Oct. 699/1 All who have sought to sail the skies divide themselves..into..the ‘lighter-than-airites’ and the ‘heavier-than-airites’.] 1908H. G. Wells War in Air viii. §2 The most efficient heavier-than-air fliers. 1909A. Berget Conquest of Air ii. ii. 155 Many persons ask aviators why their ‘heavier-than-air’ apparatus is not provided with parachutes. 1909Flight 19 June 356/1 Any heavier-than-air type of machine. 1909Daily Chron. 9 Sept. 1/6 For a long time, Mr. Cody has practised heavier-than-air flying on Laffan's Plain. 1927C. L. M. Brown Conquest of Air 21 When heavier-than-air flight was an accomplished reality. 1961C. B. Smith Testing Time ii. 27 The War Office instructed O'Gorman to concentrate entirely on airships. They admitted that ‘heavier-than-air dirigibles’ might one day have military uses. |