调速电力驱动 meaning in Chinese

adjustable speed electric drive

Adjustable speed electrical power drive systems - part 6 : guide for determination of types of load duty and corresponding current ratings
可调速电力驱动系统.第6部分:负载类型和相应电流额定值的测定指南
Adjustable speed electrical power drive systems - part 1 : general requirements - rating specifications for low voltage adjustable speed d . c . power drive systems
可调速电力驱动系统.第1部分:一般要求.低压可调速直流电驱动系统的额定值规范