Keywords Markov skeleton process, normality, backward equation, finite dimension distribution, instantaneous distribution, GI/G/1 queueing systems with N-vacation;

• 马尔可夫骨架过程;正规性;有限维分布;水库储水模型;带N-策略休假的GI/G/1排队系统;银行存贷差模型;易腐烂物的存储模型;