The conclusion in this paper has been proved by the field data measured from the oil transferring system with frequency variation speed-regulation in Daqing No. 2 Oil Plant.
并利用大庆采油二厂变频调速输油系统的实测现场数据，证实了本文的结论。
The conclusion in this paper has been proved by the field data measured from the oil transferring system with frequency variation speed-regulation in Daqing No. 2 Oil Plant.
并利用大庆采油二厂变频调速输油系统的实测现场数据，证实了本文的结论。
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