| 释义 |
trailing edge
[trailing ppl. a.]
1. The rear edge of a moving body; spec. in Aeronaut., that of a wing or other part of an aircraft.
1909Flight 3 July 390/1 These ribs overlap the rear spar and form a flexible trailing edge. 1934Flight 8 Feb. 123/1 The split trailing edge flaps effect a big reduction in landing speed and length of glide. 1962[see riblet]. 1969Daily Tel. 12 Nov. 14/6 Warning red lights mounted in the interior trailing-edge of the doors come on when a door is opened. 1971I. G. Gass et al. Understanding Earth xix. 263/1 The newly generated crust and its upper mantle is effectively welded to the plate's trailing edge.
2. Electronics. The part of a pulse in which the amplitude diminishes.
1945Nature 15 Sept. 319/2 The end or ‘trailing edge’ [of the pulse] marks the beginning of an invaluable clear period in which the radar echoes..can be received free from the overlaying and interfering effect of the primary signal. 1967Electronics 6 Mar. 160/1 Nearly all of the earlier logic systems were based on trailing-edge triggering, so many engineers consider it normal. 1973Sci. Amer. May 109/2 The trailing edge of the next pulse, the third in the series, causes flip-flop A to change state. |