以下为句子列表：
英文: Variation tendency of nozzle gap and contact stress was obtained in terms of multi-time computational results, and some modification suggestions, which are available for designers of solid rocket motor nozzle, were presented by the tendency.
中文: 综合多个时刻的计算结果得到发动机工作过程中喷管结构缝隙和接触应力的变化趋势，并据此对设计缝隙提出了修改意见，结果可为发动机喷管设计提供参考。
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