本文建立了大型履带起重机桁架臂结构寿命预测体系，并且得到了验证。

It is found and established of the system about residual life evaluation for large cranes' booms in the thesis.

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这种新材料将会减少脱焦的次数以及有助于节省能源，提高生产力，并延长管道的结构寿命。

Materials will reduce the frequency of decoking and help save energy, boost productivity, and increase the structural life of the tubes.

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在飞机结构寿命理论的基础上，结合小型无人机机体结构特点，建立了小型无人机机体寿命分析方法。

Bases on the aircraft structure fatigue life theory, consider the characteristics of small UAV, the model of fatigue life prediction for small UVA structure is established.

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