update README.md

BIMCoderLiang · BIMCoderLiang · commit e9cb7147a681 · 2025-10-07T23:42:28.000+08:00
diff --git a/README.md b/README.md
@@ -121,6 +121,7 @@ void ConvertToOpenCascadeSurface(const LNLib::LN_NurbsSurface& surface, Handle(G
         surface.DegreeU, surface.DegreeV);
 }
 ```
+More Details could be found in [LNLibEx](https://github.com/BIMCoderLiang/LNLibEx) Library, which used for **export nurbs surfaces to STEP or IGES** format file.
 
 ## Online Document
 Welcome to use https://deepwiki.com/BIMCoderLiang/LNLib powered by Devin.

Original file line number	Diff line number	Diff line change
`@@ -121,6 +121,7 @@ void ConvertToOpenCascadeSurface(const LNLib::LN_NurbsSurface& surface, Handle(G`
`121`	`121`	`surface.DegreeU, surface.DegreeV);`
`122`	`122`	`}`
`123`	`123`	```
	`124`	`+More Details could be found in [LNLibEx](https://github.com/BIMCoderLiang/LNLibEx) Library, which used for export nurbs surfaces to STEP or IGES format file.`
`124`	`125`
`125`	`126`	`## Online Document`
`126`	`127`	`Welcome to use https://deepwiki.com/BIMCoderLiang/LNLib powered by Devin.`