基本解释[计算机科学技术]字符负确认字元负确认词组短语短语negative acknowledge character [计][通信]否认字符;[计]否定字符;反确认字符;不认可字符NAK Negative AcKnowledge character 否认符;否认信号NAC Negative Acknowledge Character 反确认字符专业释义计算机科学技术字符负确认字元负确认