To raise efficiently the maintenance level and enhance the quality of service, the exchange code should be managed intellectually.
为了有效提高维护水平和服务质量，应对局号资料进行智能化管理。
To raise efficiently the maintenance level and enhance the quality of service, the exchange code should be managed intellectually.
为了有效提高维护水平和服务质量，应对局号资料进行智能化管理。
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