being or having been enlarged, extended or broadened, in particular 被扩大的;被扩展的,尤指 ■denoting materials which have a light cellular structure 多孔的;发泡的 expanded polystyrene. 泡沫聚苯乙烯。 ■denoting sheet metal slit and stretched into a mesh, used to reinforce concrete and other brittle materials 板网,多孔(金属)网,拉制(金属)网(用于加强混凝土和其他易碎材料) ■relatively broad in shape 宽的 the expanded fins of the ray. 鳐宽宽的鳍。