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Guangxi Army
The Guangxi Army was an army raised by the Qing dynasty (China) to fight in the Sino-French War d…

Potassium oxide
Potassium oxide (K2O) is an ionic compound of potassium and oxygen. It is a base. This pale yello…

Zhang Youxia
Zhang Youxia (Chinese: 张又侠 ; born July 1950) is a Chinese general in the People's Liberation Army…

Xi Jinping
Xi Jinping (born 15 June 1953) is a Chinese politician who has been the general secretary of the …

Complexity science
A complex system is a system composed of many components that interact with one another. Examples…

Social complexity
In sociology, social complexity is a conceptual framework used in the analysis of society. In the…
Overwing exit
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Auxiliary verb
The examples and perspective in this article may not represent a worldwide view of the subject.Yo…

Nitrogen dioxide
Nitrogen dioxide is a chemical compound with the formula NO2 . One of several nitrogen oxides, ni…