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ƷڹڽΣҪͨƷʹ־ʹöƷΪʵƷʹĹ˶ƷﲻӦ̷صƷȿɹޱ˷ڵ͵ķDZڶƷ붾ƷɻյԤ֮ЧҲΥعʹԼľƷӦֹӦȻóıȻ(һ)ܱ
ݹҵݱ2018һȹ繫˾ͳйɿ99.9812%ѹϸ99.999%оҵ涨еɿʲ99.90%ѹϸʲ96%ũɿʲ99.70%ѹϸʲ95%ڲǿ豸άȷȫаȫɿʹõõԱĿǰļ֧ҪӰ2´ɵԤЭƻⶨ֮һݡģ֧ƻڽ
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