chalk number

• 序号

chalk number的用法和样例：

例句

1. If a sequence number is missing in the series, that segment is retransmitted.
   假如在系列中有一个序号遗失，那个区段将被重传。
2. The receive-sequence number provides the number of the frame to be received next.
   接收序号代表的是下一个要被接收的讯框号码。