Many legacy applications and programming languages have native support for XML but don't have support for JSON as it's a newer technology.
许多遗留应用程序和编程语言具有对xml的原生支持，但是不支持JSON，因为JSON是一个较新的技术。
XML has become such an important part of technology that it is only natural to use a programming language that has XML support built in to its syntax.
XML已经成为一种重要的技术，编程语言只有在其语法中内置了XML支持，才能自然地应用XML技术。
Second section presents the construction of the programming system based on XML technology and COM technology, realizing 4 languages defined in IEC61131-3, and HMI system.
其次，采用基于XML的结构化配置技术和分布式组件技术构建软件平台的编程系统，实现了IEC61131-3支持的4种语言，以及在此基础上的监控系统。
Second section presents the construction of the programming system based on XML technology and COM technology, realizing 4 languages defined in IEC61131-3, and HMI system.
其次，采用基于XML的结构化配置技术和分布式组件技术构建软件平台的编程系统，实现了IEC61131-3支持的4种语言，以及在此基础上的监控系统。
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