李因笃

李柏是明清之际关学的领军人物之一，他和李颙、李因笃并称关中三李。

Li Bai , Li Yong and Li Yindu called Guanzhong 3 Li .

同时也指出了李因笃古音研究的不足之处，包括对两汉诗歌注音的缺陷，对两汉诗韵研究不明音变，古诗无叶音观念不彻底，以及以唐诗论古韵等。

At the same time we also evaluates the deficiencies , including phonetic defects , the study on the Han Dynasty poetic unidentified the sound changes , and proving the ancient rhyme with Tang Dynasty poems and so on .

本文以李因笃《汉诗音注》和《古今韵考》为研究对象，深入挖掘这两本著作中的音韵材料，旨在全面系统地总结李氏音韵学尤其是古音学的成就与不足。

Taking the book of " Han Poetry Phonetic Notation " and " Ancient and Modern Rhyming " as the study objects , this paper digs the phonological materials of the two books and summarizes his achievements and limitations on phonology study especially the ancient phonology study .