He said the country needs to install at least one battery of an ultra-modern air defence system on four sides of major cities or military installations for security.

Study on System Dynamics Model of Simulation of Air-defense Confrontation

空防对抗仿真的系统动力学模型研究

Syria also has about 4000 rockets, which, like American stingers, can be carried around without vehicles and hoisted onto a shoulder for use: "man-portable air-defence systems", or MANPADS.

叙利亚也有约4000枚火箭弹，像美国的机尾炮，可不用运载工具随身携带，挂在肩上使用，“单人便携式空防系统”，或manpads。

I do not think the German Air Force has the numbers or quality to overpower our air defences.

我不认为德国空军在数量和质量上能击溃我们的空防。

The air defense combat system was a class of complex military combat system.

空防作战系统是一类复杂的军事作战系统。

However, the Diefenbaker government followed the security policy of the St. Laurent Government, and approved the North American Air Defense Military Agreement in less than two months.

可是，执政后的迪芬贝克政府却沿续圣劳伦特政府的安全政策，在执政不到两个月的时间就批准了北美空防（以下简称诺德，英文简称NORAD）军事协定。

" The two countries have also offered to set up a project in Pakistan for manufacturing short-medium-and high-range air defence systems," he added.

“这两个国家都可以向巴基斯坦提供建立生产短程及远程的空防系统，”他补充道。

We may need to upgrade to Defcon three.

空防可能得进入状况三。

The model of target acquisition is a key model in simulation of air defense antagonism.

目标探测模型是空防对抗仿真中的关键模型之一。

Air defense by the use aircraft or missiles or artillery or electronic countermeasures.

使用飞机或导弹或电子对策的空防。

The analysis and evaluation of air-to-ground engagement effect is a kernel portion of the air-to-ground engagement simulation training system, and also is a very difficult problem.

空对地作战效果的分析与评估，是空防对抗仿真训练系统的一个核心组成和难点问题。

Production yield of KHS additive is averaged 77% with the highest one over 90%, and the waste water can be reused.

结果表明，KHS添加剂的生产工艺简单，产品质量达到要求，平均产率为77%，最高产率达90%以上，并可回收和利用废液。

Comprehensive assessment model of the survivability of air defence missile system

防空导弹武器生存能力的综合量化评估

Transforming Local Civil Air Defence Tunnel into Main Fan Performance Test System

局部开发人防坑道为主扇性能测试系统

Evaluation and Selection of Technology for Civil Air Defence Projects

人防工程技术的评价与选择

Application of virtual reality technology in air defence weapon system ′ s development and production

R技术在防空武器系统研制生产中的应用

Standards of medical aid engineering design of the civil air defence

人民防空医疗救护工程设计标准

Principles and Suggestions for Function Conversion of Civil Air Defence Works

人防工程平战功能转换的原则和建议

Study on Information Operation Method for Ship-based Missile Air Defence System

海军舰载导弹防空系统信息作战方法

Cause Analysis and Countermeasures of Electric Fire in Civil Air Defence Engineering

人防工程电气火灾起因分析及对策

Several Problems and Their Countermeasures on Urban Air Defence Construction

当前城市人防工程建设中的若干问题及其对策