There are many methods for the principle of the three-dimensional position detection device. The camera captures the image of the target point to assist the image processing. Use multiple lasers or radars to achieve triangulation; PSD and parallax ranging method using multiple semiconductor devices.
2.PDD represents the percentage of depth dose.
PDd is defined as the percentage of absorbed dose Dd at a certain depth D on the central axis of the body membrane to absorbed dose d0 at a reference depth D0, which is a physical quantity describing the relative dose distribution at different depths of the central axis of the ray.
3.PDD is the English name of e-sports player Liu Mou.
Liu Mou is an e-sports player of League of Legends with a game ID of PDD. He was the former captain of LOL branch of NGG and EHOME team, and later retired from Invictus Gaming. LOL branch He is a solo player in the IG team, and now he is the game anchor.
Related characters experience
20 1 1 June, League of Legends just entered China. PDD Liu Mou joined his first professional team-NGG team. After two months of experience, in August of the same year, Liu Mou switched to the EHOME team.
20 1 1, 1 1, EHOME team finally lost to WE team and won the second place in TGC league.
On March 20 12, PDD Liu Mou announced his retirement. ?
On April 20 12, he announced that he would join the IG team and return. Later, in the challenge of South Korea, PDD led the team to win by using the future guardian to play well. In the S2 China Finals, Liu Mou played an outstanding role, led the IG team to win the first place in the China qualifiers, and successfully entered the S2 World Finals stage.
Reference to the above content: Baidu Encyclopedia -PDD