优选词，正式主题词
Layer
定义
某概念特定涵义的完全解释- A material entity which 1) is spatially continuous, 2) is composed of material of comparable thickness, composition, and physical properties, and 3) is physically distinct from adjacent portions of environmental material. (TIB, The Environment Ontology)
上位概念
上位概念狭义概念
狭义概念其它语言
其它语言中概念术语- Layer
英语
URI
https://purls.helmholtz-metadaten.de/skosmos/sdv/Layer