负循环码 meaning in English

negacycliccode

Solutions presented in this thesis can be summarized as follows : - a sufficient and necessary condition is given for the negacyclic codes whose binary images under the gray map being cyclic , and the binary images are determined when the condition is satisfied
本文的主要结果为： 1给出了判定一个四元负循环码的二元像是否是循环码的充分必要条件，并在条件成立时，给出了其二元像的结构； 2