变频控制技术
transducer control technique
frequency conversion control technology
frequency control technique
frequency converter
植物声频控制技术
Sound frequency control technology
acoustic frequency technology
锁相控制技术
phase-lock control technique
单周定频控制
one-cycle fixed frequency control
定频控制
constant-frequency control
constant-switching frequency
constant frequency control
定位控制技术
Location control technique
定制控制器
controller of automatic measurement
变频器控制技术
inverter control tech-nology
变频协调控制技术
Variable frequency harmony control technology
Variable frequency harmonycontrol technology
臭氧发生器电源移相控制闭环频率自动跟踪
ozonizer power supply phase-shifted control closed loop frequency automatic trace
移频技术
moving frequency technology