“first species”的概念、定义、翻译、参考文献-科学参考

单词	first species
释义	first species [`fǝrst `spē´shēz] ^MATHEMATICS The class of sets G₀ such that one of the sets G_n is the null set, where, in general, G_n is the derived set of G_n-1.
随便看	Lr LRC l-rhodeose LRRP LSA diode LSB L scan L scope LS coupling LSD LSD-25 L shell LSI circuit LTPD LTRS Lu lub lubber line lubber's line lubber's-line error lubber's point lube cut lube oil lube-oil distillate lube stock

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