Extended regular expressions with counting and interleaving are widely used in practice. However the related theoretical studies for this kind of expressions currently cannot meet the need of practical work. This paper develops syntax definitions for extended deterministic expressions and their subclasses, hope to completely solve the long-standing problem that there are no syntax definitions for this kind of expressions, which has become an important reason for restricting the use of extended expressions.

翻译：带有计数和中间线的扩展常规表达式在实践中被广泛使用。 但是,对于这类表达式的相关理论研究目前无法满足实际工作的需求。 本文为扩展的确定表达式及其子类制定了语法定义,希望完全解决长期存在的问题,即这种表达式没有语法定义,这已成为限制使用扩展表达式的一个重要原因。