The study on electronic commerce starts from 1998 in WTO.

WTO对电子商务问题的专门研究始于1998年。

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Its goal is to systemically study simulation electronic technology, electric power and electronic technology foundation, signal and system and so on to build the foundation.

开设目的是为系统学习模拟电子技术、电力电子技术基础、信号与系统等课程打下基础。

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So the study on simple control with good static and dynamic performance is a hot spot in power electronic fields.

二是动态性能好。 因此研究既简单又具有优良动、静态性能的逆变电源控制方案，一直是电力电子领域的研究热点问题。

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The Federal Aviation Administration says it will study the use of portable electronic devices on airplanes, and it is fair to say the airline industry is wary.

FORBES: Airlines Wary of Portable Electronic Devices on Planes