We use mainly the squariance method among sequence samples cluster analysis and the method of optimum partition, and combine the standard of release level of seismology strain energy to divide it.
主要使用了有序样品聚类分析中的离差平方和法、最优分割法，再结合地震学应变能释放水平进行划分。
From the point of view of energy-saving, this peper gives a quantitive analysis of the impact of no-water-level operation of feedwater heaters on the economic performance of power plants.
本文从节能角度出发，定量地分析了加热器无水位运行对火电厂热经济性的影响。
It was found that the deepness of impurity energy level is related to the atomic Numbers of doped elements by the analysis of their electronic structures.
通过对电子结构的分析，发现杂质能级的深浅与掺杂元素原子序数有关。
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