noun🔗Share棘爪，止回爪. A pawl, click or detent for holding or propelling a ratchet wheel, or ratch, etc."The bicycle mechanic checked the ratchets in the gear-shifting mechanism to make sure the gears wouldn't slip. "自行车修理工检查了变速器里的棘爪 (jí zhuǎ)，确保齿轮不会打滑。machinetechnicalpartdeviceChat with AIVocabulary GamePractice Reading
noun🔗Share棘轮, 棘齿轮。 A mechanism composed of a ratchet wheel, or ratch and pawl."The old machine uses ratchets to ensure the conveyor belt only moves forward, preventing any backward slippage. "这台旧机器使用棘轮机构来确保传送带只能向前移动，防止任何向后滑动。machinetechnologypartdeviceChat with AIVocabulary GamePractice Reading
noun🔗Share棘轮扳手，快速扳手 A ratchet wrench."He needed to tighten the bolt on his bicycle, so he grabbed his set of ratchets. "他需要拧紧自行车上的螺栓，所以他拿了他的那套棘轮扳手。machineutensilChat with AIVocabulary GamePractice Reading
noun🔗Share递增机制，单向累进。 (by extension) A procedure or regulation that goes in one direction, usually up.""The company's policy on bonuses acts as a ratchet: each year's minimum bonus is based on the previous year's highest payout, ensuring it can only increase or stay the same, never decrease." "公司关于奖金的政策就像一个递增机制：每年的最低奖金都是基于前一年最高的奖金支付额，确保它只会增加或保持不变，永远不会减少。systemprocessdirectionChat with AIVocabulary GamePractice Reading
