制造的原理 第七季 How It's Made Season 7 (2006)认领

　　1. Footballs; Electric Guitar Amplifiers; Marbles; Airplane Props 　　2. Engine Blocks; Jawbreakers; Drum Shells; Drums 　　3. Lighters; Fossils; Hockey Pucks; High-Pressure Cylinder 　　4. Balloons; Wallpaper; Frozen French Fries; Incandescent Light Bulbs 　　5. Matches; Carousel Horses; Fine Porcelain; Fuel Tanks 　　6. Glass Cookware; Soap Bars; Steel Drums; Firefighter Uniforms 　　7. Crayons; Woo...