非常好用无敌波段指标 用法注释:买入线下破趋势线后再上穿趋势线买入,可安全获利.趋势线上行更佳! 参数：N 13 1 100; M 13 1 100;(Very good use of invincible band index Usage Note: Buy below the trend line and then buy above the trend line. It can make a safe profit