1) Near difference sets of type 1
1型拟差集
2) near difference sets
拟差集
1.
Then it generalize near difference sets of type 2 to Abel near difference sets of type 2,and obtain some necessary conditions for the existence of Abel near difference sets of type 2.
然后把型 2拟差集推广到阿贝尔型 2拟差集 ,并得到阿贝尔型 2拟差集存在的必要条
3) Abel near difference sets of type 2
阿贝尔型2拟差集
4) quasi-—1 type
拟-1型
5) Circular quasi-difference set
循环拟差集
6) 1/4 simulation model
1/4车模拟模型
补充资料：差拟
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参考词条