[Gmsh] physical surface and mesh inside

[王学敏]

Dear gmsh user,
I used solidworks to get the geometry and imported to gmsh. Attachments are
IGS file and msh file. You can see I just get mesh on the surface and I do
not know how to define physical surface. I want to get mesh inside and on
the surface. Thank you so much.
Best regards,
Xuemin
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