bi-direction transmission  双向传输

forward direction transmission  正向传输

information dual-direction transmission  信息双向传输

Reverse Direction Transmission  反向传输

scraper transmission selector shaft  铲运机传动系选择器轴

scraper transmission selector spool  铲运机传动系选择器滑阀

single direction transmission  单向传动机构

toll transmission selector  长途传递选择机

transmission direction  传输方向

transmission direction control handle  变速箱方向操纵手柄

transmission direction control lever  变速箱方向操纵杆

transmission direction selection  变速箱方向选择

transmission direction spool  变速箱方向滑阀

transmission selector and pressure control valve  变速箱选择器和压力控制阀

transmission selector group  变速箱选择器组件

transmission selector lever  变速箱选择器杆

transmission selector lever lock  变速箱选择器杆锁

transmission selector valve  变速箱选择器阀

direction selector  方向选择器