| 释义 |
▪ I. pre-ˈset, a.
[pre- A. 1.]
Decided or determined in advance; (of apparatus, etc.) set in advance of its operation.
1934Practical Wireless 10 Mar. 1127/2 (heading) Bank of pre-set condensers. 1946Jrnl. Inst. Electr. Engin. XCIII. ii. 426/2 Pressure switches..which close circuit on the pressure falling to a pre-set point, may be installed. 1954N.Y. Times Mag. 29 Aug. 49/1 The pre-set missile is not guided; it is fired, like a shell, at a pre-determined trajectory. 1961G. Millerson Technique Television Production iii. 23 (caption) Height is pre-set and not readily adjusted. 1966D. G. Brandon Mod. Techniques Metallogr. 102 The specimen stage..will remain in a preset position sufficiently long to permit any area to be photographed with the full resolution of the instrument. 1973Country Life 29 Nov. 1796 (Advt.), This ultramodern..oven..switches off at a pre-set time. 1978R. V. Jones Most Secret War xlv. 447 Graphite rudders that were placed in the main jet so as to deflect the stream of incandescent gases and thus turn the rocket on to a preset trajectory both in bearing and in elevation.
▪ II. pre-ˈset, v.
[pre- A. 1.]
trans. To set or fix (apparatus) in advance of its operation; to settle or decide beforehand.
1946Sun (Baltimore) 18 July 13/2 A pressure gauge..can be preset to open at an altitude where there is enough oxygen for a man to breathe. 1958Engineering 11 Apr. 468/3 Temperature controllers which can be remotely pre-set from the control room. 1960[see bias a., n., and adv. B. 7]. 1962D. Slayton in Into Orbit 68 You could preset the trainer for any kind of mission you wanted to fly. 1962Which? May 148/1 The grinder was pre-set to give a certain particle size. 1977Gramophone Feb. 1343/2 Under a sliding lid..are four similar controls for pre-setting your choice of ‘instant’ programmes. |