iff
abbr. 敌我识别系统（Identification Friend or Foe）
conj. 当且应当(if and only if)
例句
According to the contract, Thales will deliver IFF for the whole Indian fleet of 63 MiG-29.
根据合同，Thales公司将为印度整个机队共63架米格- 29战斗机提供敌我识别询问应答器。
The radar includes a fully integrated Identification Friend or Foe (IFF) interrogator system.
该雷达包含一个完全集成的敌我识别系统。
Defence Electronics has delivered many IFF systems to several NATO nations for ground and naval applications.
防务电子公司已向北约几个国家交付许多敌友识别系统，用于陆军和海军。
