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GRIB (GRIDded Binary) is a standard file format for storing and transmitting meteorological data, designed by the World Meteorological Organization (WMO). It is mainly used to describe rasterized meteorological data, such as temperature, humidity, wind speed, precipitation, etc. GRIB files store data in binary form, which is efficient and has a high compression rate, so it has become one of the main data formats in the meteorological field.

VRML is the abbreviation of Virtual Reality Modeling Language. It was created mainly to solve the problem of realizing 3D animation effects and user interaction based on 3D objects in web pages. VRML files are usually used to describe 3D virtual environments, containing information such as vertices, edges, and colors of polygons. Using VRML, developers can create interactive 3D scenes that can be displayed on web pages. VRML files use the extension .wrl (world file) and are stored in text format, which has good readability and is easy to edit manually.