与此同时，如何建立脆性材料在双轴应力作用下的破坏准则一直是人们所追求的目标之一。
At the same time, how to establish the failure criterion of brittle materials in biaxial stress state is one of people's goal.
本文采用随机骨料模型和双折线损伤模型相结合，在细观层次上对混凝土在单轴荷载作用下的力学特性和破坏机理进行了数值研究。
In this paper, the random particle model and double lines damage model are used, and uniaxial mechanical properties of concrete and the damage mechanism are integrated on meso-level.
用车床和外圆磨床组合的方式经济而高效地生产摊铺机双振捣轴，加工工装起着十分重要的作用。
While machining dual vibrating shaft for paver using lathe and circular grinding, the tools set up are very important.
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