The result must agree with the check digit.

结果必须同意检查数字。

It also doesn't verify the credit card's check digit.

也不能检查信用卡的校验位。

The card number, a thirteen - or sixteen-digit string with a check digit.

信用卡号，13或16位数字组成的字符串，包括一个校验位。

A field such as an account consisting of a base number and a check digit.

一种字段，如帐号，由一基数和一个检验数字组成。

A check digit is a method of verifying the accuracy of a single data item, such as a credit card number.

检验位是一种校验单个数据项的准确性的方法，如信用卡号。