iff

This predicate returns true iff u has extended a friendship invitation to v.

该谓词返回true当且仅当u向v发出了朋友邀请.

IFF is one of important application of automatical target recognizing ( ATR ) technology.

敌我识别(IFF)是自动目标识别 ( ATR ) 技术的重要应用之一.

Azimuth zero correction is an important aspect for IFF system correction.

方位零值标校是识别器设备系统标校的一项重要内容。

If E is a finite-dimension space, then F is relatively compact iff F is both equicontinuous and uniformly bounded.

然后指出当E是有限维空间时，F是相对紧的当且仅当F是等度连续且一致有界，这推广了AA定理。

The secondary radar IFF ( Identification of Friend-or-Foe) systems mainly consisting of interrogators and transponders, are used to identify the friend-or-foe attribute of the targets that are detected by the primary radar.

二次雷达敌我识别系统用于识别一次雷达检测到的目标的敌我属性，它主要是由询问机和应答机两部分组成。

The core technology in the design of IFF ( Identification Friend or Foe) system is how to generate the cipher, and this is dealt with in the paper.

敌我识别系统（IFF系统）密码的产生是全系统的核心。本文主要就适合于IFF系统的伪码&KM钟控伪码的产生给出了具体设计思想和硬件实现电路。

Solution: IFF inoperative in OFF mode.

解决: IFF无法操作已关掉.

AIMS-Airspace Traffic Control Radar Beacon System IFF Mark XII System

空中交通监控雷达信标系统敌我识别标志XII系统

The working principle and coding mode of laser IFF system are analysed. The application of laser countermeasure technology such as intell gence and jamming to the laser IFF system is discussed.

分析了激光敌我识别系统的工作原理和编码方式，探讨了激光对抗在对激光敌我识别系统侦察和干扰中的运用问题。

we compared the effect of intermittent, intravenous cyclophosphamide ( ctx) and low dose prednisone ( c ± p) in 16 patients with idiopathic pulmonary fibrosis ( ipf) with that of high dose prednisone alone ( p) in 18 cases of iff.

以大剂量强的松（P组）治疗18例特发性肺纤维化（IPF）作为对照，与间断静脉滴注环磷酰胺（CTX）加小剂量强的松（C+P）组治疗的16例IPF患者进行了对比观察。

Small IFF device for single or group soldiers a lane Between the lines of the soldiers

单兵（或兵组）使用的小型敌我识别器一排排士兵间的小通道

IFF ( Identification between Friend or Foe ) system is very important in modern wars.

敌我识别 ( IFF ) 系统在现代战争中具有举足轻重的作用.

Kurt watched his motion tracker, IFF tags overlaid on the grid.

库尔特观察他的动作追踪器,敌我识别标志盖在格子上.

How to improve the sensitivity of the measurement circuit and linearity of the sensor within its full-scale will influence the performance of the sensor in respect that the discriminable output capacitance of microsensors is much less than IFF.

由于微传感器的测量分辨输出电容很小，远远小于皮法，如何提高小电容的测量电路的灵敏度和改善全量程测试中的非线性直接影响传感器的性能。

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。

A total function fis a Context free Infinite Preserving Function if and only iff is a Context free Preserving function.

完全函数f是无穷保上下文无关函数当且仅当函数f是保上下文无关函数。

Laser weapons and their countermeasures are more important on modern battlefield, and IFF ( Identification between Friend or Foe) system using laser technology is useful to gain victories.

现代战场上，激光武器及其对抗已显得日益重要，采用激光技术实现目标间敌我识别，也成为战场制胜的有效手段。

One of the key technologies in the missile IFF ( identification friend or foe) system is the encrypting transmission for the questioning and answering signals.

导弹敌我识别系统的核心技术之一是询问信号与应答信号的加密传输。

R is left IF ring iff every finitely generated left R-module is embeddable in a flat module.

R为左IF环当且仅当任一有限生成左R&模均可嵌入平坦模；

Several Azimuth Zero Correction Methods for the IFF System Deployed on Mobile Platforms

机动平台识别器方位零值的几种标校方法

Also, a hyperplane in X is Tsequentially closed iff it is T ~-- closed.

又, X中超平面为T—列闭当且仅当它为T~ -— 闭.