介绍了评估节能电动机经济效益及效率测试的方法。
Last, the evaluation of economic benefit and efficiency test for energy-saving motors are to be introduced.
针对此种情况，本文对抽油用节能电动机进行了研究。
In view of this situation, the energy-saving motor for oil pumping is studied in this paper.
整个课题主要由三部分组成：节能电动机的电磁设计；
The whole subject is consisted of three parts mainly: electromagnetic design;
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