Dataset Direct Download Service (WFS): Zoning related to easements of the PM3 category (Technological Risk Prevention Plan)

e The plate of an easement is the spatial field (i.e., the geographical area) within which the easement applies. This space field can be defined either in 2D or in 3D in particular in the specific cases of airport clearance easements, easements to protect radio transmission centres.e、 地役权（easement）的图幅（plate）指其适用的空间场（spatial field，即地理区域）。该空间场可通过二维或三维方式进行定义，在机场净空地役权（airport clearance easements）、保护无线电发射中心（radio transmission centres）的地役权等特定场景中，该定义方式尤为适用。