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单词
ratchet wheel
释义
WordReference Random House Unabridged Dictionary of American English © 2024
ratch
′
et wheel′,
Mechanical Engineering
a wheel, with teeth on the edge, into which a pawl drops or catches, as to prevent reversal of motion or convert reciprocating motion into rotatory motion.
1770–80
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更新时间:2025/10/19 4:40:11