End of Text文本结束 End of Transmission传送结束字符 Structure Enhanced (setext) text增强(setext)文本结构 Embedded Technology Extended (standard for embedded PC modules)嵌入式技术扩展(标准对嵌入式计算机模块) Expected Number of Transmissions (metric)预期的传输(度量) endotoxin内毒素 End Transmission Text最终传输的文本