| 释义 |
▪ I. † undershoot, a. Obs. rare.
= undershot a. 1.
1602Carew Surv. Cornwall i. 26 b, So the imprisoned water payeth the ransome of dryuing an vnder-shoote wheele for his enlargement. 1678Patent Office No. 208. 1 To Retayne Back Water of all sorts of Mills and..to make Vndershoote to serve Overshoote Mills.
▪ II. ˌunderˈshoot, v.
[under-1 10 a.]
1. trans. and intr. To shoot short (of) or too low (for). Also fig., esp. of financial performance.
a1661Fuller Worthies, Lincoln. ii. (1662) 151, I believe they overshoot the Mark, who make it a Miracle, they undershoot it who make it Magick. 1874J. W. Long Amer. Wild-fowl. i. 24 The rib should be..sufficiently elevated at breech to prevent under-shooting. 1883Cent. Mag. Aug. 492/1 The sportsman of unsteady nerve..is apt to undershoot. 1885W. T. Hornaday 2 Yrs. in Jungle xviii. 199, I..fired at his temple... Fool that I was, I undershot the brain because the elephant was below me. 1977Daily Tel. 10 Mar. 21 Evidence that the public sector borrowing requirement is still firmly under control with only a month of the current financial year to go has added to signs that the money supply is also going to undershoot even the lower end of the target range. 1982Times 23 Apr. 21/3 The public sector borrowing requirement in the financial year just ended undershot the Government's original estimate.
2. trans. and intr. Of an aircraft or pilot: to fail to reach (a designated landing-point) while attempting to land. Cf. overshoot v. 1 d.
1918W. G. McMinnies Pract. Flying v. 79 If he sees that he is going to undershoot, it is a good plan to make another circuit. 1938Sun (Baltimore) 8 Jan. 3/2 He undershot storm-swept Newark airport. 1947A. C. Douglas Gliding & Adv. Soaring 68 If you are still high, wait a bit before turning round into wind, but it is always better to come in slightly high and then do gentle S turns into wind, than undershoot. 1969Gloss. Aeronaut. & Astronaut. Terms (B.S.I.) ii. 4 Undershoot, to land, or to follow an approach path which would cause an aircraft to land, short of the intended area.
Hence underˈshooting vbl. n.
1928B. Studley Pract. Flight Training xxiv. 293 Undershooting is always to be avoided. 1982Age (Melbourne) 3/1 The Treasurer..also outlined ‘savings’ of $361 million made by the Government on earlier appropriation bills..because of normal undershooting of Budget outlay targets.
▪ III. ˈundershoot, n.
[f. the vb.: cf. overshoot n.]
The action or result of the vb.; spec. in Electronics, a small variation in signal immediately before, and in the opposite direction to, a sudden (larger) change.
1934in Webster. 1938[see power approach s.v. power n.1 18]. 1956Amos & Birkinshaw Television Engin. II. i. 26 (caption) Waveform of a pulse with undershoot of the leading and trailing edges. 1959Listener 26 Feb. 371/1 The score now stands at two undershoots by the United States to one powerful drive by the Russians. 1969[see overshoot n.]. 1978Nature 12 Oct. 550/1 One of them is a progressive rise in time of the overshoot and under⁓shoot (for spikes following the first) amplitudes with nearly constant firing level. 1982Times 23 Apr. 23/7 When one allows for the adverse impact on Government resources of the civil servants' dispute, the undershoot is larger still. |