上下文无关;
例句:
Meanwhile a method to construct a normalized form for a lattice-valued context-free tree grammar is presented.
同时给出了构造正规形式的等价文法的方法.
Proves that the presentation power of GEP and the context-free grammar with one none-terminal are equivalent.
指出基因表达式编程和仅含有单个非终结符的上下文无关文法在描述能力上是等价的.
Proposes the context-free grammar model for GEP.
对基因表达式编程建立了上下文无关文法模型.