DPMO=缺陷率*每件機(jī)會(huì)數(shù)*1000000=[(25+10+7+8)/4*500]*1000000=25000
AL=(總時(shí)間-設(shè)置時(shí)間-管理時(shí)間-故障時(shí)間)/總時(shí)間=[(480-15-10-30)/480]*100%=90.4%