第8部分3点照明，背景和一个楼层是为了给使用合成标签了洁白的环境。

Part 8 3 point lighting, a background and a floor are created to give a pure white environment by using compositing tags.

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使用上图的设置，透视图中的背景将显示环境图片。

Using the Settings above, the background of your perspective viewport will show the LDR environment map.

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为了使实验环境更接近现实网络，在验证算法的公平性的试验中使用了自相似的背景流来模拟网络的状态变化。

In order to make the experiments environment close to the real network, in the experiments of verifying fairness of algorithm we use self-similar flow as the background flows.

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