maintenance fee赡养费; 生活费maintenancen.维修；维护；保持；生活费用；抚养费maintenance rehearsal维持性复练maintenance recording维修记录maintenance algorithm维护算法Maintenance task type维修工作类型maintenance frequency维修次数maintenance contracts[经] 维修合同maintenance processor维护处理程序maintenance logistics技术保证,保养勤务maintenance allowance[经] 维持费； 赡养费maintenance equipment养路设备,维护设备