平へい均きん修しゅう理り時じ間かんMeaningsNoun1. mean time to repair; MTTRKanji used平flat均equalize修discipline (of study)理logic時time間intervalComposed of平へい均きんaverage; mean; balance; equilibriumNoun修しゅう理りrepair; mending; fixing; servicingNoun時じ間かんtime; hour; period; class; lessonNoun