へいきんこしょうじかん 平均故障時間 LinksSentence search for 平均故障時間Sentence search for へいきんこしょうじかんKanji details for 平, 均, 故, 障, 時 and 間Edit in JMdict Noun1. mean time to repair; MTTRComputing Discussions Log in to talk about this word.