超声辅助助剂提取技术
ultrasounic extraction technology
电厂辅助车间
auxiliary workshop of power plant
动车辅助系统
Auxiliary system of locomotive
辅助车间集中监控网络
auxiliary system monitoring-control network
辅助车间控制系统
auxiliary shop control system
列车辅助变流器
auxiliary converter of the train
全厂辅助车间网络
factory auxiliary workshop network
货车车底
the underside of the truck
货车车钩缓冲器
wagon coupler and draft gear
货车车号管理系统
freight car number administration system