Update your 7-Zip to the latest version.

Are you working with a specific (like Unity/Unreal) or a simulation software (like Assetto Corsa) for this wing?

Usually refers to "decomposing" or breaking down complex geometry (the "Washboard" or "Improper Wing" components) into usable sub-meshes.

If the "Wing" looks distorted, perform a Smart UV Project to reset the texture coordinates.