The experiment technology and equipment of ac drive system are the important method of the study, development and speciality teaching of ac traction engine.
交流传动系统实验技术和设备是交流传动机车研究、开发及专业教学的重要手段。
Abstract: the trend of web assistant teaching is becoming inevitable along with the rapid development and popularization of computer network technology and terminal equipment.
摘要：伴随着计算机网络技术的迅猛发展和终端设备的迅速普及，利用网络资源进行辅助教学成为必然的趋势。
The company also engages in research and development of multi-media closed-circuit-television teaching system, multimedia classroom equipment and cable TV system for education industry.
在教育行业专门从事多媒体闭路电视教学系统、多媒体教室设备的研制开发以及专业经销有线电视系统设备的高科技股份制公司。
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