Objective to explore how to use the method of grey forecast analysis in the number childbearing on seasonal change.
目的论述和探索灰色预测在产妇分娩季节变动中的应用方式和途径。
The new forecast analysis method on the flight accident-rate and the flight incident-rate is discussed by using the forecast method based on grey control principle.
基于灰色预测理论，给出了飞行事故率和事故症候率预测分析的新方法。
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