详细说明：可以将两块网卡合并使用，类似于负载均衡，明显有助于网速的提升，但对于下载，提升不明显 可以合并
Two network cards can be used in combination, similar to the load balancing significantly contribute to the enhancement of speed, but for the download, the upgrade is not obvious. learning (2013-05-03, Video, 519KB, 下载3次)