The first question of power system classification voltage control is partition of control area.

电力系统进行分级电压控制的首要问题就是对系统进行控制区域的划分。

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Make a whole water system as a basic cell, discuss the encoding method, classification factor and classification criterion used in water system classification.

以一个完整的水系流域作为对象，讨论了水系编码，分类判别因子，分类标准制定等。

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In the fourth chapter, the paper mainly embarks from the system classification, proposes the system form concept, and elaborates main content of the system form theory and the system form analysis.

第四章主要是从系统分类出发，提出了系统形态的概念，阐述了系统形态理论和系统形态分析的主要内容。

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In 1851, American librarian Melvil Dewey, who devised the system of classification for library cataloguing, was born.

CNN: Tuesday,

With its new manual, the APA might instead have started taking steps toward a system of classification that, as in medicine, organizes disorders according to what we know about their natures and causes.

WSJ: DSM-5: A Manual Run Amok

The manual's classification system also has been a major factor in decisions involving grant funding and scientific publications.

WSJ: Revised Psychiatric Manual Faces Mixed Reviews