WR2:100*(HHV(HIGH,N1)-CLOSE)/(HHV(HIGH,N1)-LLV(LOW,N1));
A、两线同时下穿50进入强势买入（激进买点）；
B、两线同时下穿20且两线大于0买入（稳健买点）威廉参数42 21 编辑成下穿50预警和下穿20预警 大师
公式模块：
{预警1}
N:=42;
N1:=21;
WR1:=100*(HHV(HIGH,N)-CLOSE)/(HHV(HIGH,N)-LLV(LOW,N));
WR2:=100*(HHV(HIGH,N1)-CLOSE)/(HHV(HIGH,N1)-LLV(LOW,N1));
激进买点: CROSS(50,WR1) AND CROSS(50,WR2);
{预警2}
N:=42;
N1:=21;
WR1:=100*(HHV(HIGH,N)-CLOSE)/(HHV(HIGH,N)-LLV(LOW,N));
WR2:=100*(HHV(HIGH,N1)-CLOSE)/(HHV(HIGH,N1)-LLV(LOW,N1));
稳健买点: CROSS(20,WR1) AND CROSS(20,WR2) AND WR1 0 AND WR2
