本销售年度初期，由于遭遇南美大豆竞争压力，美国大豆出口曾一度滞后。
U. S. soybean exports got off to a slow start this marketing year due to stiff South American competition. The U.
我国防龋功能性食品生产与销售规模日趋壮大，然而与之配套的功能性评价及规范化管理却相对滞后，对其进行全面科学评价在国内外尚无统一的标准。
Up to now, the manufacture scale and sale volume of anticaries food are enlarged day after day, while the function assessment and normalized administration lags behind.
但在缺少儿童动作大片的年份，比如2013年，男孩玩具销售就会滞后。
But in a year that lacks a blockbuster kids action movie, like 2013, boys' toy sales lag.
在假设销售商允许消费者退货，且退回物品经一个滞后期修复处理后仍然可和“新产品”一样销售的条件下，提出了一个扩展的EOQ订货模型。
Assuming that product taturn is permitted and the recovered product is as good as a new one, the paper presents an extended EOQ model.
在假设销售商允许消费者退货，且退回物品经一个滞后期修复处理后仍然可和“新产品”一样销售的条件下，提出了一个扩展的EOQ订货模型。
Assuming that product taturn is permitted and the recovered product is as good as a new one, the paper presents an extended EOQ model.
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