MRP计算净需求并建议或创建计划订单一满足需求。
It calculates net requirements and suggests or creates planned orders to fill them.
这意味着日本的净需求超过在此作为全球GDP的份额翻了一番，或更确切地说，它的净需求不足下降了一半以上。
This means that Japan's net demand more than doubled during this period as a share of global GDP, or more accurately, that its deficiency in net demand dropped by more than half.
目前，在生产实际中，MRP系统是通过计算按时间分段的总需求和净需求，并以间断的时间序列来表达对物料的需求。
Currently, in the actual production, MRP system is calculated on a time span through sub-total demand and net demand, and to express the demand for materials with the intermittent time series.
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