单词	Kronecker delta
释义	Kronecker delta noun Kro·​neck·​er delta ˈkrō-ˌne-kər-  : a function of two variables that is 1 when the variables have the same value and is 0 when they have different values Word History Etymology Leopold Kronecker †1891 German mathematician First Known Use 1926, in the meaning defined above
随便看	saddle tan saddle tank saddle up saddle with saddle-backed saddle-backed jackal saddle-bill saddle-billed stork saddle-check chair saddle-notched joint orunchuns Oruro Orussidae oruvailes oruvails ORV orvietan Orvieto orvietos ORW Orwell orwellian Orwellian orwellianism oryct-

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