...大学学报（自然科学版、英文版） 关键字: 非极限状态；挡土墙；主动土压力；摩擦角发挥值[gap=2014]Key words: non-limit state; retaining wall; active earth pressure; mobilized friction angle..
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改进了极限平衡理论，用于非极限状态主动土压力的研究。
The limit equilibrium theory is improved, and used in the research of active earth pressure under non-limit state.
本文的目的是要给出关于可列非齐次马尔可夫链M元状态序组出现频率的一类新形式的强极限定理，所得结论对任意可列非齐次马尔可夫链普遍成立。
The purpose of this paper is to present a class of new strong limit theorems on the frequency ofm-tuple of states for arbitrary countable non-homogeneous Markov chains.
由于此类结构形式的复杂性，目前对于非杆系结构极限状态的确定及其设计方法尚没有统一的认识。
Since the complexity of this kind of structure types, the research on the design methods of the structures is still immature.
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