docs: def ck_portf_002(self):
      ''' 3日均價大於6日均價，6日均價大於18日均價。（短中長線呈現多頭的態勢） '''
      return self.a.MA(3) > self.a.MA(6) > self.a.MA(18) and self.a.MAC(18) == '↑'.decode('utf-8') and self.a.stock_vol[-1] > 1000*1000 and self.a.raw_data[-1] > 10