数字和字符

会话标识是随机数据的唯一字符串，一般来说由数字和字符组成，这个字符串由web应用生成并通过cookie的方式发送给用户。

A session identifier ( SID ) is a unique string of random data ( typically consisting of numbers and characters ) that is generated by a Web application and propagated to the client , usually through the means of a cookie .

元素的名字可以包含子母，数字和其他字符。

Names can contain letters , numbers , and other characters .

不包含大小写、数字和特殊字符的密码？

Passwords that don 't have a mix of lowercase and uppercase letters , numerals , and special characters ?

类名可以包含字母、数字和下划线字符的任何组合，但不能以数字打头。

The class name can contain any combination of letters and numbers , as well as the underscore character , but cannot begin with a number .

在当今全球经济的时候，许多程序都允许用户用于显示的语言和其他语言相关的特定信息（比如数字格式和字符编码）。

Given today 's global economy , many programs must let each user select the language to be displayed and other culture-specific information ( such as number formatting and character encoding ) .

Twitter中的第一个简单性元素就是您能够作为数据输入的信息的数量，该数量被限制为最多140个混合数字和字母的字符。

The first element of simplicity found in Twitter is the amount of information you are able to enter as data , which is limited to140 alphanumeric characters .

研究者通常将数字识别和英文字符识别放到一起研究，是因为这两者是没有本质区别的。

Researchers usually put together with the number and character study , it is because there is no essential difference between the two object .

确保您的密码具有某一长度（八个或更多字符），并包含大写字母、数字和特定的字符，如！

Making sure your password is of a certain length ( eight or more characters ) and contains uppercase letters , numbers , and special characters & like !

从技术角度而言，正则表达式是表示某种模式的字符串（也就是说，由字母、数字和符号组成的字符序列），用于定义零或更长的字符串。

Technically speaking , a regular expression is a string ( that is , a sequence of characters composed of letters , numbers , and symbols ) that represents a pattern defining zero or more strings .

最后整合上述打码功能，最终得到适用于流水线在线打码并且能够打出字符、数字和汉字的组合字符的同时，实现任意角度任意位置的点阵汉字打码算法。

Finally integrating these coding functions , and ultimately gets to code combining characters including characters , numbers and Chinese characters using in online laser coding , while at the same time , achieves the dot matrix coding algorithms at any angle in any location .

通过数字图像识别的算法运行，系统能够自动快速准确地识别出车牌上的各类字符符号，包括数字、字母和汉字字符，并且通过嵌入式设备或者计算机终端设备，直接给出识别的结果。

Through digital image recognition algorithm running , the system can automatically and quickly and accurately identify the various characters on the license plate symbols , including numbers , letters and Chinese characters , and by the embedded device or a computer terminal , directly give the result of recognition .