单词	imaginary unit
释义	imaginary unit noun : the positive square root of minus 1 denoted by i or + √-1 Example Sentences Recent Examples on the Web The introduction of this one new non-real number — i, the imaginary unit — launched an entirely new mathematical world to explore. Quanta Magazine, 25 Oct. 2018 Word History First Known Use circa 1911, in the meaning defined above
随便看	nuclear clause nuclear cycle nuclear emulsion nuclear energy nuclear exclusion clause nuclear families nuclear family nuclear fission nuclear force nuclear fuel nuclear fusion nuclear isomer nuclear magnetic resonance nuclear magneton nuclear medicine nuclear membrane nuclear option nuclear plate nuclear power nuclear reaction nuclear reactor nuclear resonance nuclear sap nuclear spindle nuclear winter

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