变频调速控制
variable frequency speed control
Variable-frequency Speed Control
variable frequency adjustable speed
frequency conversion control
frequency control
variable frequency contral velocity
inverter drive control system
frequency con-version control
变频器调速控制
speed govornor by frequency modulator
磁场控制调速
speed regulation by field control
单制和全制式调速器
single and full function speed regulator
电抗调制方式
reactance modulation system
调速控制电动机
governor controlled motor
调速控制技术
Speed Control and Controlling Technology
调速控制系统
speed control system
speed regulation system
governing control system
speed regulating control system
调速制式
Speed-regulating System
speed regulation system
speed control mode
the mode of the speed control