1
work that is done to keep something such as a building, machine, or piece of equipment repaired and in good condition (建筑物、机器或装备的)维修,养护,保养 regular/routine/preventive maintenance 定期维修/日常保养/预防性维修
the aircraft maintenance crew 飞机维修人员
Synonyms and related words
Repairs and the action of repairing: repair, maintenance, overhaul...