英语词汇“second species”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	second species
释义	second species second species [¦sek·ənd ′spē‚shēz] (mathematics) The class of sets G₀ such that all the sets G_nare nonempty, where, in general, G_nis the derived set of G_n-1.
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