The show energy conservation effect of frequency control system is the best.
说明了变频调速系统的节能效果是最好的。
Finally, it is applied for the design of varied-frequency control system under constant-pressure.
最后，应用于高精度变频恒压控制系统设计中。
Glass frequency electrical transmission system using speed control.
玻璃传送系统采用变频电机调速控制。
Frequency measurement also is important control technology in running military power system.
测量也是军用电力系统运行控制中的重要技术。
For many years governor speed control was the only available means of controlling system frequency.
多年来用调速器控制速度是唯一控制系统频率的措施。
For many years governor speed control was the only available means of controlling system frequency.
多年来用调速器控制速度是唯一控制系统频率的措施。
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