对于nm命令列出的每个符号，它们的值使用十六进制来表示(缺省行为)，并且在该符号前面加上了一个表示符号类型的编码字符。

For each symbol that the nm command lists, the symbol's value in hexadecimal (by default) and the symbol type with a coded character precede the symbol.

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ASCII是一个编码字符集(coded character set,CCS)，换句话说，它是整数到字符表示的映射。

ASCII is a coded character set (CCS), in other words, a mapping from integer Numbers to character representations.

youdao

ASCII是一个编码字符集(coded character set,CCS)，换句话说，它是整数到字符表示的映射。

ASCII is a coded character set (CCS), in other words, a mapping from integer Numbers to character representations.

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