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Gravitorium Pro The prime purpose of Gravitorium is to let you play with ideas about gravity and gravitational systems. Create an entirely new solar system from scratch!
The GD&T Trainer: Professional Edition Effective, economical GD and T training on CD-ROM. Contains interactive lessons, technical animations, narration, 3D part drawings, course administration tools. Valuable for designers, engineers, and anyone who uses engineering drawings.
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