说明：   时间序列预测法是一种定量分析方法，它是在时间序列变量分析的基础上，运用一定的数学方法建立预测模型，使时间趋势向外延伸，从而预测未来市场的发展变化趋势，确定变量预测值
(Time series forecasting method is a quantitative analysis method, which is variable in time series analysis based on the use of certain mathematical methods prediction model established so that the time trend extends out to forecast future market trends, determine the variable predict value)