用匕首抽样的方法解决可靠性领域的三装备的热储备旁联系统的故障仿真。给出了系统的MTBF、可靠度、模式重要度等。-With a dagger sampling method to solve the reliability of the three areas of the thermal reserve next to the associated equipment, system fault simulation. Gives the system MTBF, reliability, mode importance and so on.