One of the most promising areas are in heat ducts and heat sinks and other internal parts of engines and turbines and the like. With 3D printing you can for example produce cooling ducts within the part itself this is not possible with other technologies.
Basketball Positions. To play a proper basketball game, you need 10 people, 5 on each side. Sometimes there are a few extra people for substitution when their teammates get tired or injured. Each player plays a different position in the team, this normally depends on the height and strength and weaknesses of the player.
A game of basketball is made up of four quarters, each ten (or in the National Basketball Association 12,) minutes long. At the start of each quarter the team who has the possession arrow pointing towards their hoop gets the ball. Then the arrow is switched, and the next team gets the ball next quarter.