| 单词 | rocket sled |
| 释义 | > as lemmasrocket sled b. Also rocket sled. A rocket-propelled vehicle running on rails for subjecting things to controlled high accelerations and decelerations. ΘΚΠ society > travel > means of travel > a conveyance > vehicle > powered vehicle > [noun] > rocket-powered vehicle rocket car1928 rocket sled1948 1948 Richmond (Va.) Times-Dispatch 13 Jan. 9 The rocket-powered sleds moved over a standard-gauge rail~road track.., covering the 2,000 feet in less than two seconds. 1956 L. Mallan Men, Rockets & Space vi. 84 When he decelerated from 421 m.p.h. on the new sled, he reached a peak of only 22 G's. 1967 Technol. Week 20 Feb. 18/1 Feasibility of a new segmented solid rocket sled motor designed for multiple re-use in sled testing has been shown in recent tests. 1974 Encycl. Brit. Macropædia XV. 942/1 Braking is accomplished by a parachute or, more often, by extending a scoop beneath the sled into a trough of water beneath the track rails. < as lemmas |
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