段玉裁的方言研究注重目验和历时、共时的比较，其材料及方法可供汉语史和现代汉语方言研究参考。
Du Yucai's dialect study paid attention to the comparison. Its materials and methods were for reference to Chinesehistory and modern Chinese dialect study.
为现代汉语、汉语史、语言学理论的研究提供新的材料、新的事实和新的思路。
Offer new materials, new facts and new thoughts to the research of the Modern Chinese, Chinese History and Linguistic theory.
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