The basic reason of dual economy lies in the difference between division organization and its evolution path.

二元经济产生的根本原因在于分工组织及其演进路径的差异。

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This paper deals with the evolution of the mineralization series and their mutual relationship based on systematic division of the ore deposit types and mineralization series in the area.

本文在系统划分该区矿床类型和矿化系列的基础上，分析了矿化系列的演化及其间的相互关系。

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In detail, it specifies the design of FIR filter, computing harmonics theory and the implementation of division and evolution.

着重讲述了FIR滤波器设计、谐波分析以及除法与开方运算的实现。

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Research reveals only a modest evolution in the division of household labor over the past 18 years -- mainly in the realm of child care, with more dads stepping up.

CNN: Why husbands who share household chores miss out on sex