One of the research directions of the intrusion detection technology is how to strengthen the system ' s flexibility , as to achieve that computers with different system operations can dynamically join into this detection system 同时对于分布式入侵检测系统来说，在多个不同的主机配置入侵检测系统并使这些系统都能紧密配合是比较繁重的任务。如何增强系统伸缩性，实现各种不同平台的主机动态加入是入侵检测技术研究的方向之一。
There is many equipments in the power device of ship and they often go wrong . in order to assure ship ' s running , the manager and worker have to spend a great deal of time to maintain it , in addition , only those experts who specialize in diagnostics can dispose of some fault . therefore the diagnostics and maintenance is very burdensome 船舶动力装置中存在着众多的机电设备，这些机电设备在运行中会出现各种各样的故障，故障类型繁多，设备维护人员的工作繁重，而且许多故障需要经验丰富的故障诊断专家来提出维修方案，因此设备故障的诊断和维护是一项繁重的任务，故障诊断的效率高低又直接影响船舶的运行。
