Lex and yacc can be used to parse fairly simple and regular grammars.

lex和yacc可以用来解析相当简单和规则的语法。

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This paper gives an effective method for deciding whether any two regular grammars are equivalent.

本文将给出判定任意两个正则文法是否等价的一种有效方法。

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The concepts of (deterministic) lattice-valued regular grammars(DLRG and LRG, respectively) and (deterministic) lattice-valued regular languages are formulated.

给出了（确定）格值正则文法与（确定）格值正则语言的定义。

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