独立型照明系统
stand-alone lighting system
机电交换系统
electromechanical switching system
机电传动系统
mechatronic transmission system
机电产品系统
electromechanical product
机电产品和系统
electromechanical product and system
机床主轴系统
Machine tool spindle system
机床数字控制系统
Numerical Control System for Machine Tool
机床润滑系统
Machine tools--Lubrication systems
机床切削系统稳定性
Machine cutting system stability
机床电主轴系统
Electrical spindle system of machine tools
机床变速系统
Mathine tool shifting system
机车制动控制系统
locomotive brake control system
机车语音记录系统
Train voice recorder system
机车信息系统
Locomotive information system
机车信号车载系统
On-board System of Cab Signal