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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Yangtake structural belt is located in the west of Tabei uplift and belongs to Kuche petroleum system in petroleum system classification.

羊塔克构造带位于塔北隆起的西端，属于库车油气系统的前缘隆起带。

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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 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