英语词汇“dial backup”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	dial backup
释义	dial backup dial backup [′dīl ′bak‚əp] (communications) A dial telephone line that can be used in case a point-to-point line fails, so that data transmission can continue.
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