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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：2025/2/7 9:53:41