请调整浏览器窗口大小或者请使用手机查看!
This episode demonstrates the production processes for nails and staples, safety glasses, fabrics and bicycles, and shows how each is made.
This episode demonstrates the production processes for copy paper, jeans, computers and plate glass, and each shows how each is made.
This episode demonstrates the production processes for kayaks, safety boots, electronic signs and cereals, and shows how each is made.