You can't mistake the broken line of that bridge house . 凭那桥室曲折的轮廓，准错不了。
2.
The structure of bridge housing with different thickness after optimization changed the traditional domestic designing scheme , thus provided a new designing train of thought for later design of punching - welding bridge housing 优化后的不等厚桥壳结构改变了国内传统的设计方案，为以后的冲焊桥壳设计提供了新的设计思路。
3.
By means of carrying out parameterization on finite element model of certain punching - welding bridge housing and through optimization analysis , this paper realized the light weighted optimization design of punching - welding bridge housing under the conditions of letting the bridge housing to satisfy the demands of perpendicular bending rigidity , the perpendicular bending strength and the perpendicular bending fatigue life 摘要通过对某冲焊桥壳的有限元模型进行参数化，经过优化分析，使得桥壳在满足垂直弯曲刚度、垂直弯曲强度和垂直弯曲疲劳寿命的条件下，实现了冲焊桥壳的轻量化设计。
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