This study develops the switching power for the public bus voltage of the pumping frequency group control system and carries out a large number of experiments.
本文研究并设计了适用于抽油机变频群控系统这种特殊场合的开关电源，进行了大量实验并设计出样机。
This study develops the switching power for the public bus voltage of the pumping frequency group control system and carries out a large number of experiments.
本文研究并设计了适用于抽油机变频群控系统这种特殊场合的开关电源，进行了大量实验并设计出样机。
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