Precast Concrete Walls; 3D Printers; Telescopic Cranes; Kerosene Lamp Burners

Apr 30, 2015 on Science at 9:00 PM

Summary

This episode demonstrates the production processes for Precast Concrete Walls, 3D Printers, Telescopic Cranes, and Kerosene Lamp Burners and shows how each is made.

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