n.标识符，标识号，识别字(可用以进入程序或其中的数据集)

The variable "x" is an identifier in this programming context.
在这个编程上下文中，变量"x"是一个标识符。
Please provide a unique identifier for your account to ensure secure access.
请为您的账户提供一个唯一的标识符，以确保安全访问。
In the database, each customer record is identified by a unique customer ID number acting as an identifier.
在数据库中，每条客户记录都由一个作为标识符的唯一客户ID号码来识别。
The DNA sequence serves as a biological identifier for individuals.
DNA序列充当个体的生物标识符。
To track shipments, every package is labeled with a barcode scanner-readable identifier.
为了追踪包裹，每个包裹都贴有条形码扫描器可读的标识符。
The function name "calculateTotal" acts as an identifier in the code, allowing programmers to call it.
函数名"calculateTotal"在代码中充当标识符，使程序员能够调用它。
The ISBN (International Standard Book Number) is a unique identifier assigned to every published book.
ISBN（国际标准书号）是分配给每本出版书籍的唯一标识符。
To log in, enter your username which serves as your unique identifier on the platform.
要登录，请输入您的用户名，它在平台上作为您的唯一标识符。
The error message mentioned an unknown identifier, indicating a variable or function name was not recognized by the compiler.
错误消息提到了一个未知的标识符，表明编译器无法识别一个变量或函数名称。
RFID tags are used as identifiers in inventory management systems to track items wirelessly.
RFID标签用作库存管理系统中的标识符，以便无线跟踪物品。