In fact, the highest part is 5,072 meters above sea level, making it the highest rail 22 ack on the 23 planet!
事实上，最高的地方海拔5,072公尺，所以这是地球上最高的铁路轨道！
Custom, with SACK: the last data set was gathered using the large window-inducing client while also including four SACK options on every ACK sent.
定制，启用SACK：最后的数据集使用了引入大窗口的客户机，同时也在每次发送ack时增加四个SACK选项。
A SACK receiver, on the other hand, can issue an ack for 1 plus a SACK option for packets 3 through 9.
另一方面，SACK接收方可以发出包1的ACK和包3到包9的SACK选项。
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