齿轮齿条 Traditional 齒輪齒條 chǐ lún chǐ tiáo 🔊 rack and pinion + Review this word Meanings chǐ lún chǐ tiáo 齒輪齒條 (mechanical engineering) rack and pinion Its characters 齿chǐtooth轮lúnwheel; disk; ringHSK 6条tiáostripHSK 2