A stemmer extracts the root form of a given word.
词干分析器用于提取给定单词的根形式。
AIM: To study the relationship between root form and frequency of C-shaped canals in the mandibular second molars.
目的：调查下颌第二磨牙扇形根管的出现率与牙根形态的关系。
AIM: To study the relationship between root form and frequency of C-shaped canals in the mandibular second molars.
目的：调查下颌第二磨牙扇形根管的出现率与牙根形态的关系。
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