名词
中文翻译：主要应力方向
同义词：
['principal stress direction', 'principal strain direction']
例句：
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1.The new design aims to improve the efficiencyof the machine by reducing the principal straindirections.
新设计旨在通过减少主要应力方向来提高机器的效率。
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2. In theconstruction of bridges,understanding the principal strain directions iscrucial for ensuring structural stability.
在桥梁建设中，了解主要应力方向对于确保结构稳定性至关重要。
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3. The research on the principalstrain directions in concrete structures has significant implicationsfor engineering applications.
混凝土结构中主要应力方向的研究对工程应用具有重要意义。