variable vohage variabIe frequency

• 变频调速

variable vohage variabIe frequency的用法和样例：

例句

1. The maturing of variable frequency technology becomes an assurance for the reliable operation of a trolley type scraper.
   变频调速技术的成熟是滑线式铲运机可靠工作的保证。
2. Potpourri control of the microcontroller Frequency Control System is used to thinking poor frequency control.
   单片机控制的变频调速系统设计思想是用转差频率进行控制。