If the transmitting radio doesn't receive the acknowledgment in a certain amount of time, it will assume that the data was lost, and it will resend it.
如果无线发送装置在一定时间内收不到应答，就假定数据丢失，并且将重新发送数据。
Window size determines the amount of data that can be transmitted at one time before the destination responds with an acknowledgment.
视窗大小是表示在目的地端回应确认讯号之前可以一口气传送的资料量，这是就决定好了。
If an acknowledgment has not been received within a certain amount of time for a message that has been transmitted, the infrastructure automatically retransmits the message.
如果在特定一段时间内没有收到已传输之讯息的认可，则基础结构会自动重新传输该讯息。
If an acknowledgment is not received within a certain amount of time for a message that has been transmitted, the infrastructure automatically retransmits the message.
如果在传输消息后的一段确定时间内未收到确认，则基础结构将自动重新传输该消息。
If an acknowledgment is not received within a certain amount of time for a message that has been transmitted, the infrastructure automatically retransmits the message.
如果在传输消息后的一段确定时间内未收到确认，则基础结构将自动重新传输该消息。
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