本文对公用数据采集网进行了研究。
This paper makes a study of a public network for data acquisition.
本发明属于公用电话、数据交换网系统工程技术。
This invention refers to public telephone, data exchanging network system engineering tech.
本发明属于公用电话、数据交换网系统工程技术。
This invention refers to public telephone, data exchanging network system engineering tech.
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