然而，流媒体业务是一种宽带业务，对于网络带宽、抖动、延迟和丢包率都有较高的要求。

However, as a kind of broadband service, streaming media service has strict requirement for network bandwidth, jitter, delay, and loss tolerance.

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然而现有的互联网络建立在传输非实时数据的基础上，在延迟、抖动和包丢失率等方面，缺乏对实时通信的良好支持。

However, since the current Internet is not built for real-time data transition, support is lacking in the Internet to meet delay, jitter and packet loss requirements for real-time traffic.

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测试的内容主要有：延迟、抖动、丢包率。

The test items include delay, dithering and the rate of the package loss.

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测试的内容主要有：延迟、抖动、丢包率。

The test items include delay, dithering and the rate of the package loss.

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