How to say mating gear in Mandarin Chinese Pinyin

How to say mating gear in Putonghua|Mandarin Chinese Pinyin

Useful Expressions or Words (English)	Chinese Pinyin & Chinese Symbol Translation	Sound
mating gear	niè 啮 hé 合 chǐ 齿 lún 轮 ; pèi 配 duì 对 chǐ 齿 lún 轮

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