IP组播技术实现了IP网络中点到多点的高效数据传输， 它能弥补单播通信和广播通信的不足。

IP multicast technique realizes efficient data transmission from one point to multiple points in IP network, and remedies the defects of unicast and broadcast communication.

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基于现有的各种文件传输协议实现数据传输虽然高效并且容易实现，但不能很好地适应互动网络教学中文件传输的某些特殊性。

The data transmission on the basis of existing file transport protocols can not well adapt to some of the particularities in the interactive teaching network.

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广播内存实时网技术是一种高效的网络数据传输技术。

The Broadcast Memory Real Time Network is a data transmission technology with high efficiency.

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