In other words , it adopts the principle of main prevention and planned examination to enhance the equipment reliability . in the water power station , whether mechanical equipments maintenance or electric equipments maintenance , the planned maintenance is adopted in the whole of maintenance in order to accomplish the production - reliability target for increasing economy benefit . the production - reliability target includes fof ( forced outage factor ) , eaf ( equivalent availability factor ) , po ( times of planned outage ) , uo ( times of unplanned outage ) etc 在水电厂,不论机械设备还是电器设备,几乎都是采用固定周期的检修或更换的处理方法预防事故的发生,完成发电企业确定的可靠性生产指标:提高机组的等效可用系数,降低强迫停运次数,减少机组的非计划停运次数(次/台年)等,从而提高企业的经济效益。
As an important portion of intelligent transportation system ( its ) , vehicle navigation attracts more concern than before . its research is of great significance . we can direct and supervise vehicles running in urban areas effectively , improve the thoroughfare capacity , allocate and dispatch resources reasonably , guard against accidents and deter crimes aiming at vehicles 作为智能交通系统( intelligenttransportationsystem , its )的重要组成部分，车载导航是目前研究的热点；通过车载导航系统，对市区内的车辆进行有效地指挥和监控，从而可以缓解交通紧张状况，合理地分配、调度资源，预防事故，威慑针对车辆的犯罪行为等等。
Abstract : aimed at the accident of chatching fire of a certain type of self - propelled antitank gun s chamber , the paper analyses the normal burning of powder and the efficiency of the gun s extracting device and other factors affecting the burning velocity , makes an improvement on the weapon system , and puts forward the requirements for using the gun under army conditions 文摘:针对某型自行火炮实弹射击中战斗室弹药仓内半可燃药筒起火燃烧事故，通过对可燃药筒完全燃烧的理论分析和火炮抽气装置结构效率分析以及可能影响药筒燃烧速度的其他因素分析，提出武器系统及可燃药筒改进意见，并对部队条件下的使用提出了要求，对改善装备性能，预防事故发生具有重要意义。
