The effectiveness of the swing phase control has been shown by experiments.
实验表明这种控制方法是有效的。
Four-phase control method has been introduced particularly and three basic principle expressions are proved.
其中重点介绍了四相控制法，并且详细推导证明了三个基本公式。
Four-phase control method has been introduced particularly and three basic principle expressions are proved.
其中重点介绍了四相控制法，并且详细推导证明了三个基本公式。
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