In contrast, AIX is broken down into four main operating system levels: version, release, technology level (TL), and service pack (SP).

相比之下，AIX分为四个主要的操作系统级别：版本、发行版、技术级(TL)和服务包(SP)。

youdao

Second, AIX breaks down its versioning into four levels of granularity: version, release, technology level (formerly maintenance level), and service pack.

第二，AIX 把版本分为四个粒度级：版本、发布版、技术级别（以前称为维护级别）和服务包。

youdao

Specific operating system version (including any service - or fix-pack levels).

特定的操作系统版本(包括任意的服务器-或者固定包层次)。

youdao

Specific operating system version (including any service - or fix-pack levels).

特定的操作系统版本(包括任意的服务器-或者固定包层次)。

youdao