计划外维修

【化】 non-scheduled maintenance

计划的英语翻译：

plan; design; blueprint; calculate; intend; project; propose; scheme; proposal
program
【计】 planning
【医】 project
【经】 output budgeting; plan; program; project; proposition; scheme

外的英语翻译：

besides; in addition; not closely related; other; outer; outside; unofficial
【医】 ec-; ecto-; exo-; extra-; xeno-

维修的英语翻译：

maintenance; service
【化】 maintain; maintenance (repairs); service (action); servicing
【经】 maintenance repairs; repair; repairs