.3Dファイルを開くには？

3D Drawing CAD

Ads	OS	Software
	WINDOWS	ACDSee Photo Manager VersaCAD Actify DesignShare Cadwork 3D SpinFire quick3D XnView 3D Object Converter

Advent 3B2 Document

OS	Software
WINDOWS	3B2

Geocadabra

OS	Software
WINDOWS	Geocadabra