테스트BIT Back-In Test 후진 테스트BOA Bill Of Assembly 조립명세서BOM Bill Of Material 자재명세서BOQ Bill of Quantity ... degraded by poor workmanship, out-of-specification components, and incorrect setup.공급자가 공급자 빌드에서 장비 ... 평균보전간격MTBR Mean Time Between (or Before) Repairs 평균수리간격MTTF Mean Time To Failure 평균고장시간NCMR Non