var records = exchange.GetRecords(PERIOD_M1)
    var obv = TA.OBV(records)
    Log('obv', obv.length, obv[0], obv[obv.length - 1])
    
    我对比了火币网当前OBV的值有很大差异 火币OBV当前值有几千而TA.OBV只有几百不知为何