Learning supportive tools include shared electronic whiteboard, synchronized explorer, notes system and real - time multimedia.

实现虚拟教室的工具集包括了共享电子白板 、 同步浏览器 、 笔记系统、 实时 多媒体等部分.

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LEO satellite network providing real time multimedia service is a important research direction of satellite communication.

低地球轨道LEO( LowEarthOrbit)卫星系统因能够提供多媒体通信服务而成为卫星通信研究的热点.

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Fiber - optic code - division multiple - access ( FO - CDMA ) networks are considerably suitable to real - time multimedia communications with multiple - rate.

光纤码分多址 ( O -CDMA ) 络很适合多速率的多媒体 实时 通信业务.

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