The results of on - site application have shown a longer maintenance period of pumping wells.

现场应用结果,有效地延长了抽油井的检泵周期.

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Free maintenance period is limited to the date of sale within 15 days.

免费维修期限只限于销售之日起十五天内.

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Deciding the maintenance period for working ship plants by using the method of prediction and modelling.

用预测和建模的方法求解预防性维修设备的预防维修周期.

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The corrosion extent of the furnace lining is related to the maintenance period of the furnace.

制磷电炉是黄磷生产的关键设备,炉衬的腐蚀程度关系到电炉的检修周期,受到广泛的关注.

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