gear reducer短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 齿轮减速机器,齿轮减速箱 On the basis of analyzing and discussing the structural theory of Three-Ring Gear Reducer, this dissertation gave a new scheme of planetary gear reducer with few teeth difference. 本文在分析和讨论了现有的外平动三环减速机结构的基础上,提出了一种新的内平动少齿差行星减速机的结构方案。 dictall