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。
Compared with the conventional pumping unit power saving effect is obvious.
与常规抽油机相比节电效果明显。
Compared with the conventional pumping unit power saving effect is obvious.
与常规抽油机相比节电效果明显。
应用推荐