根据汽轮机低压叶片所受载荷的特点，建立了一种基于三维有限元法和改进局部应力应变法的叶片疲劳寿命预测模型。
According to the characteristics of loads on blades, a model for estimating fatigue life of blades is presented based on three-dimensional finite element method and improved local strain method.
第三章就地图创建问题，提出了临时局部栅格法(TLOG)，并以此改进了一种基于概率模型的栅格地图创建方法。
The third chapter based on probability grid approach's research. A modified algorithm via combining Temporal Local Occupancy Grids (TLOG) method is proposed in this thesis.
改进一种基于局部区分区域特征的三维模型检索方法，提高了检索效率。
Improve a 3d model retrieval method based on the local distinctive region feature which can improve the retrieval effectiveness.
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