variable freguency drive technology的用法和樣例：
例句
- The maturing of variable frequency technology becomes an assurance for the reliable operation of a trolley type scraper.
變頻調速技術的成熟是滑線式鏟運機可靠工作的保證。 - The development of the microprocessor and microelectronics lead to the increasing maturing of the variable frequency control systems.
微處理器和微電子技術的發展，使變頻調速控制系統日趨成熟。
