Simulation results show that the proposed algorithm can effectively reduce the network bandwidth requirement of the VCR operation, while keeping good QoP.
实验结果表明，该算法能够在保持较好的用户感受质量下，有效降低了VCR操作对网络带宽的需求。
One reason is that it is more difficult to implement some complicated operations like VCR operation, and another reason is the obstruction to P2P VoD by the issue of copyright of media source.
一方面是因为点播当中的高度交互性需求（VCR操作）实现的复杂程度较高，另一方面是节目源版权因素对P2P点播技术的阻碍。
The stability of drilling chamber is an important facet to ensure the safe operation of VCR mining method.
凿岩峒室的稳定性是VCR采矿法安全的重要保障。
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