For instance, a policy that receives a SOAP request validates security information in the SOAP header to validate that a user may receive previously cached response data.

例如，收到一个SOAP请求时的策略，这个策略会在SOAP消息头里验证安全信息来确认用户也许可以接受先前缓存的响应数据。

youdao

A discrete collection of bytes comprising at least one header and optional user data.

一个离散的字节集合，包含至少一个头部和用户选项数据。

youdao

Automatically sorts the rows based on the underlying data when the user clicks a column header.

当使用者按一下资料行行首时，会根据基础资料自动排序资料列。

youdao

In the text payload, a section called UDH (User Data Header) is optional but defines lot of advanced features not all mobiles are compatible with.

FORBES: French Hacker Claims That Every Single iPhone Ever Made Vulnerable To SMS Spoofing Bug

As Apple is using the reply-to address of a message's User Data Header to identify the origin rather than the raw source, receiving iPhone owners risk being fooled by a phishing attack (or just a dishonest acquaintance) that poses as a contact or a company.

ENGADGET: iPhone reportedly vulnerable to text message spoofing flaw