The child is the character information item, meaning that the item contains alphanumerical characters.

子项是字符信息项，即包含字母数字字符的项。

It includes sorting algorithms, developed by the author, for use with random alphanumerical and numerical data key fields.

它包括了排序算法，由作者开发的，可用于随机的文字数字和数字数据关键字。

Passport number Passports have numerical or alphanumerical designators (" serial number ") assigned by the passport issuing authority.

护照号护照具有由护照颁发机构分配的数字或字母数字表示(“系列号”)。

The regular expression is changed to locate a four-digit number, followed by a dash, followed by a three-digit alphanumerical sequence.

将正则表达式修改为寻找4位数字，后面跟一个连字符，最后是3位的字符数字序列。

However, password cracker dictionaries contain a large number of today's passwords, and they try out all kinds of (alphanumerical) combinations.

然而，黑客字典包含了大量的今天的密码，并且它们尝试了各种(字母数字混合)组合。