ratchet

详细解释:n. 棘轮, 棘爪
【机】 棘轮, 棘齿轮

词型变化：

动词过去式:ratcheted过去分词:ratcheted现在分词:ratcheting第三人称单数:ratchets

英语解释：

名词 ratchet:

mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction同义词：rachet, ratch