variable frequency speed-regulating 变频调速 ; 变频器
ac variable frequency speed regulating 交流变频调速 ; 交流调速
variable frequency speed regulating system 变频调速系统
motor variable frequency speed regulating 电机变频调速
variable-frequency speed regulating system 变频调速系统
variable frequency regulating speed 变频调速
ac variable frequency regulating speed 交流变频调速
variable frequency regulating speed system 变频调速系统
This paper discusses the slip frequency control of variable frequency regulating speed system, and analyses the shortage of this control way.
本丈对转差频率控制的变频调速系统进行讨论，分析这种控制方式所存在的不足；
And the introduction of ac Variable Frequency Speed Regulating technology in the petroleum domain has become a effective action to conserve energy and improve the product quality.
而在石油领域中引入交流变频调速技术已成为节能以及提高产品质量的有效措施。
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