尤其当处理的语言文法规则过多时，过于频繁的指针操作会降低系统的稳定性和可靠性。
If grammars of the language has too much rules, over frequently operating pointer will decrease the stability and reliability of a system.
本文描述的计算机选案子系统采用语义文法结构，中间语言采用语义依存树的形式。
The computer aided tax system described in this thesis is a semantic grammar system, with the semantic dependency tree as the intermediate language.
本文走从语言文字描述至符号化再到形式化的崭新道路，首先为一般性的智能控制系统提出并建造了结构模型，然后利用形式语言理论将结构模型推导成了一种上下文无关文法。
First, a structural model has been put forward and constructed for general ICS ', then by utilization of formal language theory, the structural model formulated as a kind of context-free grammar.
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