按钮电话机
push button telephone set
按钮电话受话机
push button telephone receiver
共电电话机
common battary telephone set
telephone set
common battary
市内电话电话号码配换选号
Selection or Change of Telephone Number
多电机传动
Multi motor Drive
Multi-drive
multiple-motor drive
Multi-electromotor Driving
multi-motor drive
multi-motor-drive
多电机独立传动
multi-motor independent drive
多电机控制
multiple motors control
multiple motors controlling
多电机控制系统
multi-motor driving system
多电机同步
multi-drive synchronization
多电机同步传动系统
multi-motor synchronous drive system
多电机同步控制
Multi-motor Synchronization Control
Multi-motor Synchronous Control
multi-motors synchronous control
多电机同步驱动系统
Multi motor synchronous driving system
多电机系统控制
Multi-motor systems control