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[1]杨玉红,吴欧. ri(A+B)riA+B成立的条件[J].重庆师范大学学报(自然科学版),2007,24(1):22-24.[doi:10.11721/cqnuj20070106]
 [J].期刊社,2007,24(1):22-24.[doi:10.11721/cqnuj20070106]
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 ri(A+B)riA+B成立的条件

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更新日期/Last Update: 2013-07-05