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Revit files are design files created using Revit, a BIM (Building Information Modeling) software developed by Autodesk. It is unique in its ability to integrate and manage 3D models and design information used in the fields of architecture, structure, and engineering (MEP). It is widely used in the construction industry around the world and is a core component of the BIM workflow that covers the entire life cycle from building design to construction and maintenance.

SL3 (Spatialite Version 3 Database File) file format is a SQLite database file with the extension .SL3, which contains spatial data tables and related spatial indexes. It uses the file structure and data organization of the SQLite database, and adds the functions of spatial data storage and query on this basis.

IFC (Industry Foundation Classes) is an open BIM (Building Information Modeling) file format widely used in the construction industry. The IFC format was developed by buildingSMART, an international building standards organization, to promote data sharing and collaboration between different software tools in the construction industry. It is an open standard for describing all relevant data and information in construction and building engineering projects, such as buildings, equipment, structures, materials, etc. This allows information in the building design, engineering and construction process to flow seamlessly between different software.

TAB file is a file format used to describe geographic spatial data. It is usually a logical “data table”, but it not only contains tabular data, but also links to other files to provide spatial reference and geometric data. It is the main format for MapInfo software to read and write spatial data. It is suitable for storing vector data types such as points, lines, polygons, and can support topological structures and coordinate information. It is widely used in the GIS industry for its good structure and powerful functions, and can store spatial data and related attribute data.

JPEG (Joint Photographic Experts Group) is a file format widely used for digital image compression, with the extension “.jpg” or “.jpeg”. It was developed by the Joint Photographic Experts Group established in 1986 and was officially adopted as an international standard (ISO/IEC 10918-1) in 1992. JPEG mainly uses lossy compression, which can significantly reduce the size of image files with a high compression rate. Therefore, it is widely used in digital cameras, websites, social media and other fields.

In GIS, a Coverage file is a data type used to represent a continuous area, usually composed of multiple grid cells spliced together. Each cell can contain one or more attributes, such as height, temperature, or land use type.

BMP file (bitmap file, extension: .bmp) is a file format for storing bitmap images, developed by Microsoft. It is widely used as a standard image format in Windows environment, mainly used to process uncompressed raster images. Since BMP files store each pixel data of the image as it is, they can display high-quality and lossless images, but the file size is often large.

KML (Keyhole Markup Language) is an XML-based file format used to describe and store geographic information data (such as points, lines, surfaces, polygons, polyhedra, and models).

Baidu Coordinate System (BD09), also known as Baidu Coordinate System, is a coordinate system developed by Baidu to meet the special needs of geographic information systems in mainland China. It is encrypted based on the WGS84 coordinate system (World Geodetic System 1984) to ensure accurate geographic positioning services within mainland China.

SketchUp is a 3D modeling software developed by Trimble, with the core concept of “making 3D modeling as natural as sketching with a pencil”. It significantly lowers the threshold of 3D design through a minimalist interface and intuitive push-pull modeling tools (such as drawing lines to create surfaces and extruding to create bodies), and is suitable for quickly building solution prototypes in the fields of architecture, interior design, and landscape. Its unique advantage lies in the balance between professionalism and ease of use. 80% of users can master basic operations within 3 hours.