moving average process

例句：

1. 1. Themoving average is calculated by taking the averageof the last N periods.
   移动平均是通过取过去N个时期的平均值来计算的。
2. 2. Infinancial markets, the moving average is usedto identify trends and patterns.
   在金融市场中，移动平均被用来识别趋势和模式。
3. 3.The moving average can be used as atool for predicting future prices in commodities trading.
   移动平均可以作为预测商品交易未来价格的工具。