Combined with density filtering technique to improve the smoothness of density field, the mesh-dependence phenomenon is overcome.
采用密度过滤技术进一步提高密度场的连续性和光滑性，从而消除了网格依赖性现象。
Form the point view of inverse PDE, the essence of numerical instabilities in the topology optimization is given, including checkerboard pattern and mesh-dependence.
从偏微分方程反问题的角度解释了结构拓扑优化中棋盘格式、网格依赖性等数值不稳定现象的本质。
The filtration method with 100 mesh sieve was used to measure the absorption time dependence of water-absorbency, then the LAS was derived.
使用100目金属筛网以自然过滤法测定高吸水树脂吸液倍率随吸液时间的变化，求出树脂吸液速率。
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