目的：探讨上颌骨三维有限元分析中较合理的边界约束条件的设定。
Objective: to discuss the rational boundary constraint design in finite element analysis of the whole edentulous maxillary and cranial skeleton.
分析结果表明，边界约束条件对斜拉桥结构的地震反应有明显影响；
The comparison is made in terms of the seismic response of this bridge of two types of boundary conditions.
结合边界约束条件对网架温度应力的影响来探讨网架结构边界条件的选型。
Boundary conditions style selection of space grids are discussed based on boundary restraint conditions affecting temperature stress of space grids.
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