When a system is acted by a stochastically disturbing source (for example, the seismic or the hurricane) which satisfies the hypotheses of spacing homogeneity and simultaneity, its reliability should be analyzed under failure-dependence of structures.

• 当工程系统受到单一随机干扰源(如：地震、飓风等)作用时(满足区域性和同时性假设)，系统的可靠性分析必须考虑结构间的失效相关性。