中文摘要：

文献对Bh序列和Magnitude错误标准下m元t-sEC／AUED码的关系进行了讨论，在此基础上提出了一种Magnitude错误标准下m元可纠t个对称错的纠错码的构造方法，并相应地给出了可纠t个对称错的纠错码码字个数的下界。

英文摘要：

By discussing the relationship of Bh sequence and t-sEC/AUED code,a general construction for m-ary codes of correcting t or fewer symmetric errors with the magnitude error criterion is presented and new lower bounds for such codes are obtained from this general construction.