maintenance rig维修架
maintenancen.维修;维护;保持;生活费用;抚养费
maintenance training维修训练
maintenance decision维修决策
maintenance of plant种植养护
maintenance practice保养程序
maintenance modeling维护建模
maintenance and care维护保养
maintenance downtime停修时间
maintenance cleaning维持清理
maintenance protocol维护协议
maintenance manpower维修人力