Using this conceptual classification, operations support systems produce a variety of information products for internal and external use.
利用这一概念分类，运营支持系统产生的各种信息产品，供内部和外部使用。
Using this conceptual classification, operations support systems produce a variety of information products for internal and external use.
利用这一概念分类，运营支持系统产生的各种信息产品，供内部和外部使用。
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