维护与保养 meaning in English

care and maintenance

The maintenance of the rotary head gamma kinfe
旋转式头部伽玛刀的维护与保养体会
Maintenance of cooling system used in diesel engine
矿用柴油机冷却系统的维护与保养
Care and maintenance of mining tapping equipments
矿用挖掘机的维护与保养
Maintain the elevator of testing tower
试验塔电梯的维护与保养。
An elementary introduction to electronic weighing apparatus ' defence and maintenance
浅谈电子衡器的维护与保养

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