“ratchet coupling”的概念、定义、翻译、参考文献-科学参考

单词	ratchet coupling
释义	ratchet coupling [`rach·ǝt ´kǝp·liŋ] ^{MECHANICAL ENGINEERING} A coupling between two shafts that uses a ratchet to allow the driven shaft to be turned in one direction only, and also to permit the driven shaft to overrun the driving shaft.
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