用正规文法和正规表达式描述了程序语言的单词符号的结构，用状态转换图构造了识别单词符号。
The paper describes symbolic structure of word of program language with regular grammar and regular expression, constructs converted-state chart to identify word symbol.
正规集是对许多语言理论起核心作用的一类语言，研究正规集的性质有助于有限态文法的文法推断和句法分析的研究以及正规集的自动识别。
The study of properties ofregular sets is useful to grammar inference and syntax analyses for finite-state grammars such that regular languages can be recognized automatically.
正规集是对许多语言理论起核心作用的一类语言，研究正规集的性质有助于有限态文法的文法推断和句法分析的研究以及正规集的自动识别。
The study of properties ofregular sets is useful to grammar inference and syntax analyses for finite-state grammars such that regular languages can be recognized automatically.
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