提出基于速度竞争的时间管理新概念，缩短产品开发周期和交货提前期是其追求的目标。

It puts forward a new idea: the time management based on speed competition. Its target is to reduce the cycle of product development and lead time of delivery.

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在模型中，分别考虑了制造商提前期为零和不为零，以及可分批交货等不同情形下的应用情况。

The applications under the zero or non-zero lead time of the manufacturer condition and the batches delivery condition are considered.

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