| 释义 |
half-track
1. [track n.] A vehicle, usu. military, with wheels in front and traction chains in the rear; also attrib. Also half-tracked adj., of such a vehicle.
1927Daily Express 7 Mar. 1/2 Though armoured cars are still tied to roads, the introduction of the half⁓tracked and the six-wheel carriage will..enable them to move over normal field land. 1935Sun (Baltimore) 9 Feb. 2/3 This force would necessitate acquisition of 285 lightweight tanks..and 76 half-track cars. 1943–4Hutchinson's Pict. Hist. War. 27 Oct.-11 Apr. 236 Manned by American infantrymen, this half-track vehicle is stolidly ploughing its way through thick mud. 1945Times 24 Mar. 4/1 Infantry with the task-force dropped off the half-tracks in which they travelled and flushed the woods. Ibid. 12 May 4/2 There were a few mechanical vehicles, including some of the standard half-tracked troop⁓carriers. 1955Ibid. 6 June 5/1 Israel forces made use of machine-guns and half-tracked vehicles in an attack on Egyptian positions. 1973Jewish Chron. 19 Jan. 1/1 (caption) An Israeli Army half-track vehicle carries civilians across a main square in Jerusalem as the capital lies under the heaviest fall of snow for 21 years.
2. Half the width of a magnetic tape.
1956G. A. Briggs High Fidelity xi. 127 A full-width single track tape can always be played on a half-track machine. Half-tracks can, of course, be played with full⁓width heads only when the adjacent track is unrecorded. 1959W. S. Sharps Dict. Cinematogr. 101 Half-track recorder, a magnetic tape recorder using a recording head covering half the tape width, so that double the playing time is obtained with any given length of tape and speed. 1962A. Nisbett Technique Sound Studio 273 The standard width for the recording of sound programmes is 1/4-inch and this may be recorded full, half or quarter track. |