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.
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。
This paper considers that industry safety is a systematic process, it should be classified into three levels, namely macro-level, meso-level and micro-level.
笔者认为，产业安全应当分为宏观、中观、微观三个层次，且是一个系统过程。
Meanwhile it had the level of medium-nutrient, light-eutrophic, meso-eutrophic and hyper-eutrophic.
就各湖区而言，太湖同时拥有中、轻-富、中-富、重-富四种营养型。
Meanwhile it had the level of medium-nutrient, light-eutrophic, meso-eutrophic and hyper-eutrophic.
就各湖区而言，太湖同时拥有中、轻-富、中-富、重-富四种营养型。
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