Firstly, making the time series continuous through inserting data, and secondly removing the secular displacement rate from the time series data through linear fitness.

首先对时间序列中不连续的数据进行内插处理，并通过线性拟合从时间序列中去掉长期滑动速率的影响。

youdao

But to consistently beat the industry's 15% secular annual growth rate, Dell needs China.

CNN: CHASING THE CHINA MARKET

Because I believe secular demand for cars is 3 million units above the current production run rate of 13 million, I hang in.

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