traveling gear meaning in English

行走装置
移动齿轮

The design of the transmission typed planetary gear power - shafted , is confirmed to cater to the request of design of the whole machine by the confirmation of the travel gear , the matching of the engine , the transmission and torque converter , the suitable transmission ratio of the transmission
对行星式动力换档变速箱的设计研究，是通过对整机行驶档位的确定，发动机和变矩器及变速箱的匹配，找到合适的变速箱的传动比，使其满足整机的设计要求。