The methods that divide yield stages by using the best K division way and decide the stage Numbers based on the results of periodic analysis are conducted.
并提出用最优分割法划分产量阶段，结合周期分析结果确定产量阶段段数。
Lanthanide: Any of the series of 15 consecutive chemical elements in the periodic table from lanthanum to lutetium (atomic numbers 57-71).
镧系：周期表中从镧到镏（原子序数57～71）15种按顺序排列的化学元素系列。
Transuranium element Any of the chemical elements after uranium in the periodic table (with atomic Numbers greater than 92).
周期表中铀以后的任何化学元素(原子序数大于92)。
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