制造的原理 第六季 How It's Made Season 6 (2006)认领

　　1. Three-Wheeled Vehicles; Baseball Bats; Artificial Bonsais 　　2. Springs; Pavers; Pianos 　　3. Ropes; Billiard Tables; Sailboards; Cymbals 　　4. Seatbelts; Windows; Wax Figurines; Hot Air Balloons 　　5. Air Filters; Billiard Cues; Ice Sculptures; Suits 　　6. Escalator Handrails; Highlighter Pens; Guitar Strings 　　7. Traditional Bows; Coffee Machines; Mascots; Hammocks 　　8. Fiberglass Insulation...