文学 形式语言 释 top-down parsing 自顶向下剖析 从句子符号S开始，使用语法规则自顶向下地搜索出剖析目标的句法剖析。
人工智能 计算语言学 释文 top-down parsing 自顶向下句法分析
- Umayyad Dynasty
- UMa Ⅰ
- UMa Ⅱ
- umbel
- umbelliferone
- umbellule
- umber
- Umberto Barbaro
- Umberto D.
- Umberto Eco
- Umberto Giordano
- umbilial hernia
- umbilic
- umbilical
- umbilical abscess
- umbilical cable
- umbilical cord
- umbilical cord blood
- umbilical cord blood transplantation
- umbilicali artery
- umbilical point
- umbilical sore
- umbilic catastrophe
- umbilic direction
- umbilic line