Subject	English	Chinese
logist.	application identifier	应用标识符 (Al)
el.	application identifier	请求标识符
space	application process identifier	应用进程标识符
space	application process identifier	应用进程识别符 (CCSDS 分包标准中用的)
space	application programme identifier	应用程序识别器
el.	application service layer identifier	应用业务层标识符
el.	proprietary application identifier extension	独家［优先］应用标识符扩展