| 释义 |
localizer|ˈləʊkəlaɪzə(r)|
[f. localize v. + -er1.]
One who or that which localizes; spec. in Aeronaut., a device for transmitting a narrow vertical radio beam along a runway by means of which an incoming aircraft can be brought into line with it and any lateral deviation automatically corrected. (In quot. 1872, ‘a reporter of local items’.)
1872Newton Kansan 22 Aug. 3/1 This quiet season..furnishes poor food for localizers. 1889Cent. Dict., Localizer, a small coil of definite resistance placed at each station of an electric fire-alarm system, which is brought into the circuit when the alarm is given, thus enabling the observer at the receiving-station to know the locality from which the alarm is sent. 1892Mrs. M. Butler Jrnl. 26 Jan. in H. Tennyson Tennyson & his Friends (1911) 216 He [sc. Tennyson]..preferred to believe that Homer's descriptions were entirely imaginary. When I said that I thought that a disappointing view, he called me ‘a wretched localizer’. 1942H. L. Smith Airways 364 On the landing field engineers placed a ‘localizer’, which was a radio device emitting a peculiar beam. 1945Aeronautics Feb. 29/3 The equipment linked up as a whole is then designed to guide the aircraft steadily along a localiser beam to keep it in dead line with the centre of the runway. 1946Jrnl. R. Aeronaut. Soc. Oct. 750/1 The first radio aid to approach and landing, consisting of a Marconi very high frequency track beacon or ‘localiser’ with associated marker beacons, was installed at Heston aerodome in 1935. 1965Sun 28 Oct. 8/5 As the plane approaches London Airport it fixes on a ‘localiser’ beam which brings it into line with the runway. |