订婚的平均周期为16个月。
得到了趋势项和几个不同平均周期的非周期循环分量。
The trend component and non-periodic cycle components with different average cycle of the log-price series were found.
上证国债指数存在一个易变性变动的平均周期,约为20天。
An average cycle which is about 20 days was discovered in the time series of SSE T-Bond Index.
So, how does average valence electron energy very across the periodic table?
那么平均价电子能,怎样才能对元素周期表产生很大影响呢?
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