用这个就行了:a1:=(dvol/c)/2;a2:=sum(if(a1>100 and close>ref(close,1),a1,0),0);a3:=sum(if(a1>100 and close<ref(close,1),a1,0),0);a4:=sum(if(a1<100 and close>ref(close,1),a1,0),0);a5:=sum(if...
in 1962 wal-mart founder sam wlton opened the first family store in american arkansas rogers,if calculated by the turnover,wal-mart was the global biggest ...