A great deal of electricity is used in pumping unit every year, which caused by load performance and the higher capacity used than actual need, and the electricity leakage.
抽油机每年需要大量的电能，由于抽油机的负载特性，所配电机的功率大于实际使用功率，使其效率很低，存在巨大的浪费电能现象。
A great deal of electricity is used in pumping unit every year, which caused by load performance and the higher capacity used than actual need, and the electricity leakage.
抽油机每年需要大量的电能，由于抽油机的负载特性，所配电机的功率大于实际使用功率，使其效率很低，存在巨大的浪费电能现象。
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