数据库设计不太理想4，库存采用加权移动平均法，用先入先出法更合理，5。
Database design is not ideal four, stock weighted moving average, using the first-in, first-out method more reasonable, 5.
数据库设计不太理想4，库存采用加权移动平均法，用先入先出法更合理，5。
Database design is not ideal four, stock weighted moving average, using the first-in, first-out method more reasonable, 5.
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