allaboutchinese:数学符号表 Mathematical Symbols

allaboutchinese:数学符号表 Mathematical Symbols

allaboutchinese: 数学符号表 Mathematical Symbols -- source link


#chinese#mathematical symbols#symbol
More pics about
linguisticillustrationsallaboutchinesepeacherpussyfucckinghardfragilemodelgroupsexisfunsaml1919