By comparing ancient and modern Chinese, we think the word conversion in modern Chinese is mainly a rhetoric phenomenon but in ancient Chinese is a lexical-syntactic phenomenon.
现代汉语的活用主要是修辞现象，而古汉语的活用却主要是“词汇—语法”现象。
Having introduced the compile technology into the process of NC code analysis, the process of NC code compile is divided into three stages: Lexical analysis, Syntactic analysis and NC code Conversion.
将编译技术引入NC代码分析处理过程中，把NC代码编译过程分为词法分析、语法分析和代码转换三个阶段。
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