X1:C;X2:REF(X1,10);线斜率:((X1-X2)/X2*100)*10;斜率20日值:MA(线斜率,10);DRAWTEXT(CROSS(线斜率,斜率20日值),线斜率,'始');DRAWTEXT(CROSS(斜率20日值,线斜率),斜率20日值,'终');