“second countable topological space”的概念、定义、翻译、参考文献-科学参考

单词	second countable topological space
释义	second countable topological space [¦sek·ǝnd ¦kau̇n·tǝ·bǝl ´täp·ǝ¦läj·ǝ·kǝl `spās] ^MATHEMATICS A topological space that has a countable base.
随便看	electron number electronographic tube electronography electronoluminescence electron optics electron orbit electron pair electron pair bond electron paramagnetic resonance electron paramagnetism electron-positron pair electron-positron storage ring electron probe electron probe x-ray microanalysis electron radiography electron radius electron-ray indicator electron-ray tube electron refraction electron rest mass electron ring accelerator electron shell electron spectroscopy electron spectroscopy for chemical analysis electron spectrum

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