variant character meaning in English

变量字符
变数字符
变体字符
变字字符

The thesis reviews 874 manuscripts of " mahaparinirvana scripture " of tunhuang version , and examines respectively aspects such as versions , variant characters , popular form of characters and some of the phrases
本文全面调查了敦煌本《大般涅?经》，凡874号，分别对其版本、异文、俗字和部分词语进行了研究。
Chapter three : variant characters this chapter classifies the variant characters in tunhuang " mahaparinirvana scripture " and makes conclusions about the formation of these variants . and the value and significance of study are also covered
这一章主要对敦煌本《大般涅?经》的异文进行分类，总结其成因，阐述了它的研究意义和价值。