| 释义 |
▪ I. ˈupshift, n. Chiefly U.S.
[up- 2.]
A movement upwards (esp. in various devices); spec. a change to a higher gear in a motor vehicle.
1839Ure Dict. Arts 833 The line over s, represents the down-shift, and d′ the up-shift [of a vein]. 1951W. K. Toboldt et al. Automatic Transmissions iv. 129 The point of upshift from second to third and from third to fourth is excessively high. 1967D. G. Hays Introd. Computational Linguistics iv. 65 In standard paper-tape machines, a single capital letter is represented by three frames of tape, one for upshift, one for the character, and one for downshift. 1978L. Pryor Viper (1979) ix. 175, I missed one upshift and smashed gears.
▪ II. ˈupshift, v. Chiefly U.S.
[up- 4.]
intr. To change into higher gear in a motor vehicle. Also used of the gear itself. Cf. shift v. 12 e. Hence ˈupshifting vbl. n.
1956W. H. Crouse Automotive Mechanics (ed. 3) xxiv. 513/2 If the brake band is released and at the same time the clutch is applied, the planetary set upshifts or goes into direct drive. Ibid. 515/2 Upshifting is controlled by both throttle opening and car speed. 1979Truck & Bus Transportation 31 July 25/2 The flexibility..covers up an out-of-sequence ratio gap between 3rd and 4th gears. It is not at all apparent when upshifting..but it is noticeable when changing down. |