Utility value is the matter agent of environmental economics value, utility value relation assumes catenoid or netlike structure.

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。

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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。

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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.

壳层的网状或泡孔型结构使得亲水性核可与外界接触，从而使粒子与水相和油相都相容。

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