主地毯中上层面料材料、下层材料的面密度、前端涂层及装配工艺对地毯的吸音性能具有较大的影响；
The cover material of floor carpet, the substrate mass, the front heavy layer as well as the assembly process affect greatly on the carpet absorption performance.
石体宽厚可作为下层基石，石体表面机理丰富、勾缝明显作为中层材料、端头自然扁薄者作为顶峰造型使用。
Stone body thickness can be use as the cornerstone of the lower, rich stone surface mechanism, pointing significantly as intermediate materials, end natural head flat thin as peak shape.
采用塑化松香作为岩石圈延性下层的相似材料，进行了板内塑性流动网络及多层构造变形的物理模拟实验。
The use of plasticized rosin as an analog material of the ductile lower lithosphere provides an effective approach to modelling intraplate plastic flow network and multi layer tectonic deformation.
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