Adjustment is made by deducting an average of the change in a set number of previous years from the current change, showing whether a rise or fall is unusual or purely seasonal.
通过自目前的变化中扣除过去数年的平均变动，可说明此上涨或下跌是否是不寻常的，或纯粹只是季节性现象。
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。
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。
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