求翻译：并着重介绍了电子控制液力自动变速器的控制原理和电控液力自动变速器的一些关键技术，以此作为后续章节研究的理论基础。是什么意思？

And focuses on electronically controlled hydraulic automatic transmission hydraulic control theory and the automatic transmission electronic control some of the key technologies as a subsequent chapter the theoretical foundation.

And Focused on electronic control hydraulic automatic transmission control theory and power control hydraulic automatic transmission of a number of key technologies as a follow-up study sections of the theoretical basis.

And introduced emphatically the electronic control hydraulic automatic transmission gearbox control principle and electrically controlled hydraulic automatic transmission gearbox some key technologies, take the following chapter research by this the rationale.

And focus on the introduction of electronic control hydraulic automatic transmission control principle and key technology of electric control of hydraulic automatic transmission, and use this as a theoretical basis for later research.

And focus on the introduction of electronic control hydraulic automatic transmission control principle and key technology of electric control of hydraulic automatic transmission, and use this as a theoretical basis for later research.