I(y)O(sh)SzP(gun)Iָ(bio)ǺSͱB(yng)|(zh)ЧʺЧҪ(bio)(zhn)@Щָ(bio)ͨwO(sh)ĿɿȫԡSɱSޕr(sh)gȷ(du)I(y)O(sh)SzP(gun)Iָ(bio)M(jn)Ԕ(x)Bɿָ(bio)O(sh)\(yn)еķ(wn)ԺͿɿԣO(sh)ƽϕr(sh)gMean Time Between Failures, MTBFƽޏ(f)r(sh)gMean Time To Repair, MTTRʵ@Щָ(bio)ӳO(sh)ϵlԼϰl(f)ޏ(f)ٶȺЧָ(bio)O(sh)\(yn)еO(sh)Õr(sh)gA(y)ڿÕr(sh)gͣC(j)r(sh)gָ(bio)@Щָ(bio)ӳ