成本均线只有5日13日34日和无穷
股价:close;
cb20:cyc(20);
c上穿cb20:cross(股价,cb20)
,linethick0,precis0;
c下穿cb20:cross(cb20,股价)
,linethick0,precis0;
drawtext(c上穿cb20,股价,'金叉')
,colorred,align2,valign2,precis0,linethick2;
drawtext(c下穿cb20,股价,'死叉')
,colorgreen,align2,valign0,precis0,linethick2;