A kind of induction motor soft start control method based on discrete frequencyprinciple is introduced.
介绍了一种基于离散频率原理的电机软启动控制方法。
2
This paper is an analysis of self-stabilization frequencyprinciple of the single frequency He-Ne laser.
本文首次对这种激光器的自稳频原理进行了分析。
3
Based on equal precision frequencyprinciple, this design avoids traditional cymometer's defect that precision declines as the frequency measured declines.