Studying the structure of the K_2 -group is one of the basic works of algebraic K -theory. Especially to study the structure of the K_2 -group of O_F of algebraic number field F is a very important work, where O_F is the ringof integers of F.是什么意思_Studying the structure of the K_2 -group is one of the basic works of algebraic K -theory. Especially to study the structure of the K_2 -group of O_F of algebraic number field F is a very important work, where O_F is the ringof integers of F.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句