Utility value is the matter agent of environmental economics value, utility value relation assumes catenoid or netlikestructure.
效用价值是环境经济价值的物质承担者，效用价值关系呈链状或网状结构。
2
The organization structure of distance education system can be divided into four typical modes: tree mode, radial mode, netlike mode and mixed mode.
远程教育的组织结构分为四种典型模式：树状模式、辐射状模式、网状模式、混合模式。
3
The hydrophobic shell possesses a netlike or porous structure, which ensures the hydrophilic core accessible and enables the particle to be compatible with both water and oil phases.