The source of water-full in Sichuan Furong Coal Mine is analysed with grey control system theory.

应用灰色控制系统理论中灰色因素间的关联度分析法，对四川芙蓉煤矿矿井充水水源进行了分析。

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A photovoltaic pump system based on a new Z-source inverter, whose theory and control strategy of space vector pulse width modulation (SVPWM) with short through states were introduced.

提出了一种基于新型Z源逆变器的光伏水泵系统，阐述了Z源逆变器的工作原理及其带直通零矢量的SVPWM控制策略。

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The adaptive inverse control theory has been applied in the design of a constant current source with high precision, which can be made easily as simple circuit structure.

将自适应逆控制理论应用于高精度恒流源的设计，系统结构简单，易于实现。

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In humans the vocal tract acts as a filter on the sound from the source, and the "source-filter theory" held that the separate, fine control of the vocal tract to be the product of a long evolution in the development of the subtleties of speech.

BBC: Helium-huffing gibbons 'sing with soprano technique'