星空传媒

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The 鈥9s鈥 of reliable power
ReliabilityOk forExpected disruption per year
three 9s99路9%homes8 h
four 9s99路99%factories69 minutes
five 9s99路999%hospitals
airports		5 minutes
six 9s 99路9999%banks32 s
nine 9s99路9999999%online markets30 milliseconds