service defence

英 [ˈsɜːvɪs dɪˈfens]

美 [ˈsɜːrvɪs dɪˈfens]

【法】防卫的服务，服兵役

According to the specialties and service condition at ordinary time of fire in civil air defence, the writer points out that design of fire automatic warning system must meet the relevant standard, principles and rules to make it safe, reliable and advanced in technique.
根据人防工程火灾的特殊性和平时使用情况指出：火灾自动报警系统的设计必须符合有关标准规范规定，做到安全可靠，技术先进。
It has excellent processing property and service performance with easy processing and low cost, so it is used in many industry fields such as mechanical manufacture, metallurgy, mine, petrochemical, traffic and transport, architecture and defence.
它具有优良的工艺性能和使用性能，生产工艺简单、成本低廉，被广泛应用于机械制造、冶金、矿山、石油化工、交通运输、建筑和国防等工业部门。
Distributed Denial of Service ( DDoS) attack is currently one of the greatest threat on the internet. With the development of network technology, defence has become increasingly difficult.
分布式拒绝服务（DDoS）攻击是互联网目前最大的威胁之一，随着网络技术的发展，防御也变得愈加困难。