• 1. 换码符: escape character
• 2. 换码字符: escape character
• 3. 数据通信换码字符: data link escape character

更多释义

• 1.“额外” 的那个单引号是换码符。
  The extra single quotes are escape characters.
  dict.yoduao.com
• 2.第二个 UDF 执行转换操作，进行换码符替换。
  The second UDF performs conversion with substitution escape character replacement.
  dict.yoduao.com
• 3.这个感叹号是换码符，允许您从交互输入模式或批处理模式发出操作系统命令。
  The exclamation mark is an escape character that lets you issue operating system commands from either interactive input mode or batch mode.
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