In this paper, we study transmissive property of acoustic wave in the two dimensional phonon band gap material ( PBG ). 研究了声波在二维声子带隙材料中的传输特性,把声子带隙材料作为一个散射体进行处理。
The paper deals with a boundary element method for two dimensional transient problem of multiphase material. 本文研究了二维多相材料结构的动力响应边界单元法。
It includes two sections : zero dimensional nanostructured material and one dimensional nanostructured material. 分零维材料和一维材料两节来介绍。
Graphene, a novel two dimensional ( 2D ) carbonaceous material, is composed of free-standing carbon atoms which are densely packed into a six-angle type honeycomb crystal structure. 石墨烯是由一层独立的碳原子紧密堆积成六角蜂窝状晶体结构的一种新型二维碳质材料。
Research on the theory and two dimensional mathematical model of freeze drying of material in a vial 瓶装物料冷冻干燥的机理及二维模型