As a branch of number theory, the theory of binary quadratic forms has a long history.

作为数论的一个分支，二元二次型理论有着悠久的历史。

youdao

As a branch of number theory, the theory of binary quadratic forms has a long history.

作为数论的一个分支，二元二次型理论有着悠久的历史。

youdao