渠道开发充分性与维护水平；
把航标维护水平视为航标内部现状，由航标管理者进行评价。
Whereas its maintenance level is assessed by the manager of AIDS to navigation, regarded as the interior actuality.
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.
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