三元式()(+,b,c)()(,(),e)()(+,b,c)()(/,(),f)()(+,(),())()(=,a,());四元式()(+,b,c,T)()(*,T,e,T)()(+,b,c,T)()(/,T,f,T)()(+,T,T,T)()(=,T,,a);;

  尔雅 智慧树 mooc


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