Effects of Structural Modification on Dynamic Response and Fatigue Life in Helicopter.

主要是研究结构改变后直升机结构的动力学特性以及对疲劳寿命的影响.

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It provided a feasible and effective method for structural modification of large - scale wind turbine.

这为大型风力发电机组的结构动态设计提供了行之有效的方法.

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The total chemical synthesis, structural modification and structure - activity relationship of huperzine A have been systematically reviewed.

本文系统地综述了石杉碱甲的全合成方法 、 结构改造工作及构效关系的研究.

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The total synthesis, structural modification and structure - activity relationship of huperzine A have been systematically reviewed.

本文系统地综述了石杉硷甲的全合成方法 、 构改造工作及构效关系的研究.

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