Finally author advances a idea about the advantage and foreground of power saving pumping unit.
最后还提出了节能抽油机的优点以及应用前景。
The paper proposes the principle and the system design of power saving pumping unit, and the all part of hardware and software are introduced in details.
本文阐述了抽油机节能的原理及系统设计，并给出了系统的硬件和软件的分析。
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