大家都搜：
conj.当且应当(ifandonlyif)
abbr.敌我识别"XiTong" (Identification Friendor Foe)
1、coverpoint iff───覆盖点iff
1、I WISH MORE PEOPLE CAN JOIN IN THE FESTIVITY OF THE IFF, AND MAKE IT A CELEBRATED EVENT OF THE YEAR.───我希望市民多点参加电影节，令电影节的气氛更为热闹，使它真的仿如节日一样。
2、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。
3、Definition : A partition P of a database D is TST-hierarchical with respect to Tu iff DHG(P, Tu)is a transitive semi-tree.───定义：一个数据库D分区P是尖沙咀，就涂森林华赋层次性 (P)是一个传递半树。
4、The IFF had not tracked bonus levels before 2007.───国际金融协会没有追踪2007年之前的奖金发放情况。
5、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XiTong。
6、Another trick was to activate German planes' IFF transponders, then home in on them and shoot the planes down.───还有一个技巧是打开IFF应答机伪装成德国飞机，然后瞄准并击落他们。
7、The IFF identifies cooperative targets in the area of operations and enables rapid sorting and prioritization of targets of interest.───IFFXiTong可识别战斗区域内的联合目标，快速分类和确定目标优先次序。
8、S is wise iff S believes S does not know anything.───是聪明的当且仅当S相信自己不知道一切。
9、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XiTong，用于陆军和海军。