speed governing by frequency conversion

• 变频调速

speed governing by frequency conversion的用法和样例：

例句

1. 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。
2. 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。