英语词汇“rock shaft”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-新都网

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单词	rock shaft
释义	Definition of rock shaft in English: rock shaft noun ˈrɒk ʃaftˈrɒk ʃɑːft Mechanics A shaft which rocks back and forth about its axis rather than turning continuously; especially (a) one causing valves in an engine to open and close; (b) one on a tractor for giving oscillatory motion to an attached implement. Origin Mid 19th century; earliest use found in National Gazette (Philadelphia). From rock + shaft. Definition of rock shaft in US English: rock shaft noun Mechanics A shaft which rocks back and forth about its axis rather than turning continuously; especially (a) one causing valves in an engine to open and close; (b) one on a tractor for giving oscillatory motion to an attached implement. Origin Mid 19th century; earliest use found in National Gazette (Philadelphia). From rock + shaft.
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更新时间：2026/6/15 2:46:19