单词	rocket sled
释义	rocket sled noun : a rocket-propelled vehicle that runs usually on a single rail and that is used especially in aeronautical experimentation Example Sentences Recent Examples on the Web Battista is not just a straight-line rocket sled as is the case in many electric cars. Mark Ewing, Forbes, 14 Aug. 2022 Engineers could use test platforms like the Sandia Labs rocket sled to test how these burrowing weapons performed after being dropped from a bomber. Kyle Mizokami, Popular Mechanics, 6 Apr. 2021 His skepticism vanished following tests with scale models fired down a rocket sled track belonging to the UK Defense establishment (located at Pendine Sands, the site of many 1920s land speed records). Jonathan M. Gitlin, Ars Technica, 24 Nov. 2018 Word History First Known Use 1954, in the meaning defined above
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