N a key on the keyboard of a typewriter, computer, etc, which, when depressed continuously, produces the character repeatedly until the key is released (电脑、打字机等的)自动重复键
Automatic Repeat Request (ARQ) might be used in error control technology.
纠错技术中可能用到自动重发请求(ARQ)。
This paper investigates automatic repeat request(ARQ)schemes to meet these new challenges.
文章研究了自动重发请求（ARQ）机制，来满足这些新的要求。
Then I introduce the algorithm of automatic repeat request and calculate the utilization ratio of the link.
接着又介绍了自动请求重传算法并计算了通常情况下的链路利用率。
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