frequency inverter变频器；变频装置例句1.Dual frequency inverter controlled, provides respective movement coordination for the arm and ladle.双变频器，手臂运作和杓子运作可巧妙配合。2.Research of Voltage Space Vector Control for Mine Fan with Frequency Inverter Speed System基于电压空间矢量的矿用风机变频调速系统的研究3.The Research on Medium Frequency Inverter Power Supply of Dielectric Barrier Discharge Ozone Generation中频介质阻挡型臭氧发生器逆变电源的研究