It can be used as a language for defining data descriptive languages, such as markup grammars or vocabularies and interchange formats and messaging protocols.
它能作为定义数据描述语言的语言，例如标记语法或词汇、交换格式和通讯协议。
As an open and descriptive language, XML is gradually becoming the incontrovertible standard for the Electronic Government data transmission and exchange.
XML作为一种开放型数据描述语言，正逐渐成为电子政务信息传输和数据交换的实际标准。
E language is a data model descriptive language for the power system developed by National Electric power Dispatching and Communication Center.
语言是由国家电力调度通信中心开发的电力系统数据模型描述语言。
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