the frequency conversion regulating velocity的用法和样例：
例句
- 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。 - 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。
