通过模式，验证解析器可以检查元素InvoiceNo 是否是正整数，元素 ProductID 的首字符是否为A到 Z之间的字母，后面为六个阿拉伯数字。

Through the schema, a validating parser can verify that the element InvoiceNo is a positive integer and the element ProductID consists of one letter between A and Z followed by six digits.

youdao

通过模式，验证解析器可以检查元素InvoiceNo 是否是正整数，元素 ProductID 的首字符是否为A到 Z之间的字母，后面为六个阿拉伯数字。

Through the schema, a validating parser can verify that the element InvoiceNo is a positive integer and the element ProductID consists of one letter between A and Z followed by six digits.

youdao