Computing/engineering metric for the average time required to repair a failed component or system.
The mean time to repair for this server is two hours.
Mean time between failures (MTBF); measures average time between failures, while 平均故障時間 measures average repair time.
Compound of 平均 (average), 故障 (failure), and 時間 (time). A direct calque of the English term 'mean time to repair'.