韵，包括韵腹（主要元音）、韵尾和声调，与韵母和韵部有区别。韵母包括韵头、韵腹和韵尾，不包括声调，韵部是指押韵字的归类，包括韵腹和韵尾。是韵书的基础，无论何朝何代编纂韵书，都立有韵部，按韵归字。
In the third chapter, by studying the rhyming in classical—style poetry(古体诗)and verses, it sums up 25 rhyme classes, which include 10 classes of “Yin rhyme”, 8 classes of “Yang rhyme”and 7 classes of “Ru rhyme”(入声韵).
第三章考察古体诗和韵文的用韵情况,归纳出25 个韵部:阴声韵10 部、阳声韵8 部、入声韵7 部。
参考来源 - 唐五代湖北文人用韵研究（研究生论文）·2,447,543篇论文数据，部分数据来源于NoteExpress
“韵”和“韵部”在历史上存在继承的关系，没有大小之分。
There is a successive relationship between rhyme and rhyme category.
通过系联诗歌韵脚字，考求诗文韵部系统是音韵学研究当中的一种重要方法。
Unite the poem rhyming word is an important method in the study of Chinese phonology.
目前汉语音韵学的“韵”和“韵部”不符合这一要求，给学习和研究增加困难。
But now the "rhyme with tone" and "rhyme" of Chinese historical phonology don "t accord with this demand." Therefore this phenomenon adds difficulty to the learning and academic study in this field.
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