On the other hand, a negative acknowledgement means that something has gone wrong, and the frame must be transmitted again.
另一方面，否定应答则意味着出现了某种错误，应该重新发送出错的帧。
On the other hand, a negative acknowledgement means that something has gone wrong, and the frame must be transmitted again.
另一方面，否定应答则意味着出现了某种错误，应该重新发送出错的帧。
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