By researching on CAN network and CAN spot of visual -speaking system, we have developed a kind of distributed visual-speaking system based on CAN network.
通过对CAN网络、可视对讲CAN智能节点的研究，开发CAN网络分布式可视对讲系统。
Visual-speaking system based on AT89S51 is introduced in this paper. The structure and function of entrance machine, resident machine and supervisor are analysed.
该文介绍了一种基于单片机AT89S51的可视对讲系统，分析了门口机、室内机、管理机的原理和功能。
There are many courses in each college year. But the course which impressed me most in college is Advanced English Audio-Visual & Speaking.
大学阶段各个年级都有很多课程，但给我印象最深的一门课是“高级视听说”。
There are many courses in each college year. But the course which impressed me most in college is Advanced English Audio-Visual & Speaking.
大学阶段各个年级都有很多课程，但给我印象最深的一门课是“高级视听说”。
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