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In general, it is an uncovered serve, and there are no other restrictions.
Table tennis is a popular ball sport in the world and the national sport of the People's Republic of China. Table tennis is a skill-based sport that focuses on skills and is supplemented by physical fitness, which originated in the United Kingdom. The name "ping pong" originated in 1900 because of the sound of "ping pang" when hitting, and is officially known as "ping pong" in Chinese mainland, Hong Kong and Macau.
Table tennis balls are in the shape of a round ball, and the diameter of the ball used in international competitions before (including the Sydney Olympics) before the 2000 Olympic Games was 38mm, and the diameter of the ball used in international competitions after 2000 was 40mm. It is performed on a table with a length of 274 cm, a width of 76 cm, and a height of 76 cm with a horizontal net in the middle. The ball is millimeters in diameter, weighs grams, white or orange, and is made of celluloid or plastic.
Players stand on one side of the table and hit the ball with a racket, with blocking, pumping, cutting, rubbing, pulling, etc. The ball must be on the table** before it can be returned to the net. It is valid to land on the opponent's table.
The game is divided into 11 games, with a best-of-five game and a best-of-seven game. The competition is divided into team, singles, doubles, mixed doubles and so on.
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Dear, hehe, it must also be an unobstructed serve. Otherwise, the opponent will have an opinion.
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First of all, I'm a folk, amateur level.
I play with others because I hope everyone serves according to the rules, but there are always a small number of people who come with irregular service restrictions, and most of them play occasionally, and their skills are generally much worse than amateurs. Of course, if you want to have fun together, you must follow the rules of the game, otherwise the ITTF will set so many rules! Right.
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At the beginning of the serve, the ball is naturally placed on the palm of the hand that is not holding the racket, and the palm of the hand is open and remains still. The server shall throw the ball almost vertically upwards with his hand without spinning the ball and shall not allow it to rise not less than a centimeter after leaving the palm of the non-clapping hand, and the ball shall not touch any object until it is struck out. When the ball descends from the highest point of the toss, the server can hit the ball so that the ball first touches the local table, then passes over or around the net device, and then touches the receiving player's table.
In doubles, the ball should touch the right half of the server and receiver in succession. From the time the ball is served until it is struck, the ball must always be above the table and outside the server's end lineand must not be obstructed by any part of the body or clothing of the server or his doubles companions.
Here are a few things to keep in mind when serving:
Before serving, the ball must be in the palm of the hand, not placed on the fingers to pinch, and the palm must be stretched flat. A common mistake is to hold it with your hands, with your palms not stretched out, and to throw the ball out with spin.
The height of the toss must not be less than centimeters, and the ball can only be hit when it must be lowered after being tossed. A common mistake is not to throw the ball up, but to throw it onto the racket with your hand and to cover it with your hand in front of the racket.
The ball must be above the table and off the end line, and must be unobstructed by both the receiving side and the referee.
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1. At the beginning of the serve, the ball is naturally placed on the palm of the hand that is not holding the racket, and the palm of the hand is open and remains still.
2. The server must throw the ball almost vertically upwards with his hands. Do not rotate the ball, after leaving the palm, so that the ball rises to a height of not less than 16 cm. The ball must not touch any object until it has been hit.
3. When the ball falls from the highest point of the throw, the serving side can hit the ball, so that the ball first touches its own table area, then crosses or bypasses the net, and then touches the table area of the receiving side. In doubles, the ball should first touch the right half of the serving and receiving side.
4. The ball should always be above the level of the table and over the finish line of the tee table from the start of the tee to the stroke;The ball should not be blocked by the body of the nucleated table or by his doubles companions or anything they are wearing.
5. Once the ball is thrown, the non-racket arm of the spinal server should be removed from the area between the ball and the net immediately.
6. When a player serves, he or she should let the referee or assistant referee see whether he serves in accordance with the legal serving rules.
7. If the referee has doubts about the legitimacy of the player's serve, he shall be sentenced to a new serve and warned the player when he appears for the first time in the game.
8. Thereafter, the referee again doubts the legitimacy of the player's or his doubles partner's serve and will award one point to the receiving side.
9. Regardless of whether it is the first time or at any time, as long as the player of the serving side clearly does not serve in accordance with the rules, without warning, the receiving team will be awarded an additional point.
10. If a player is unable to strictly abide by certain provisions of the legal rules due to physical injury or illness, the referee may make a decision to exempt the player.
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According to the rules of the ITTF, the main regulations for the legal serving of table tennis are:
1.When serving, the ball should be placed on the palm of the hand that is not holding the clap, with the palm open and flat.
2.The ball shall be stationary, after the end line of the serving side and above the level of the match surface.
3.The server must throw the ball almost vertically upwards with his hands, without spinning the ball and causing the ball to fall on its own before striking.
A serve that meets the above requirements is considered a legal serve.
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In table tennis, a serve needs to meet the following rules to count as a legal serve:
1.The ball must be placed above the palm of the serving hand and the ball must be served from a resting position.
2.The player cannot hide the ball, and the ball must be visible at all times.
3.To serve, the ball must first hit the serving team's service area (the area between the service line and the sideline) before crossing the net and landing within the receiving team's receiving area.
4.During the tee, the ball must not touch the serve or other objects used by the serve (such as clothing or rackets).
5.When serving, the ball cannot be spun or counter-spinn. It must be a straight ball with no significant spin.
6.When serving, the ball must be visible at all times and the opponent must be able to clearly see the trajectory of the ball.
These are the basic rules of table tennis serve. However, specific tee rules and restrictions may vary depending on the level of the match, the rules of the tournament or the requirements of the organiser. It is advisable to check the relevant tournament rules before participating in an official tournament to ensure that you understand the applicable tee rules and restrictions.
The palm of the hand is naturally extended, located outside the upper end line of the table, the ball is placed in the palm of the hand, and the ball is thrown vertically upwards, the angle of inclination of the ball shall not exceed 45 degrees, and the racket shall not be covered when it touches the ball.
The best thing to do is to go to the stadium and find someone who is higher than you and learn from him. The role of watching ** is not particularly big, because you have no practice, it is difficult to understand the content of **teaching, and the action is difficult to learn, if conditions permit, you can register for training classes in nearby clubs, and there are professional coaches to teach, and the progress will be faster. I think the most important thing in learning table tennis is to persevere, find fun from it, and improve step by step.
First of all, there is a table tennis ball storage device, such as a barrel, a square box, a funnel and other containers for putting the ball, and then there is a device for transporting the table tennis ball to the launch site, which is commonly used in a mechanical way, I use a pneumatic method, and the conveying process includes controlling the frequency of the serve, and finally the launch device, which generally uses rubber friction wheels, and also uses springs to hit the way, but can not send a rotating ball. The launcher is also usually responsible for controlling the direction of rotation of the ball. I have recently become obsessed with table tennis ball machines, DIY has desktop and floor ball machines, interested can contact me, provide finished products and components, can also provide technical advice.
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