基本解释[計算機科學技術]字符負確認字元負確認词组短语短語negative acknowledge character [計][通信]否認字符;[計]否定字符;反確認字符;不認可字符NAK Negative AcKnowledge character 否認符;否認信號NAC Negative Acknowledge Character 反確認字符character negative acknowledge更多词组专业释义計算機科學技術字符負確認字元負確認