The paper introduces graphs aided programming and macro programming in NC system, and then presents the syntax analysis process of macro program.

介绍了数控系统中图形辅助编程和宏程序编程两种编程方法，并给出了宏程序的语法分析过程。

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Syllabus:Create a new programming language including letter analysis, syntax analysis, generate low-level command and automatic optimization program;

创造新的程序语言包括字母分析、语法分析、产生底层命令、程序自动优化；

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Syllabus:Create a new programming language including letter analysis, syntax analysis, generate low-level command and automatic optimization program;

创造新的程序语言包括字母分析、语法分析、产生底层命令、程序自动优化；

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