On the rules of table tennis snatch

1. The upper surface of the desk is called the desktop, and it should be a rectangle parallel to the horizontal plane, with a length of 2.74m, a width of 1.525m and a height of 76cm from the ground. The desktop does not include the side of the desktop. The table can be made of any material and should have consistent elasticity, that is, when the standard ball falls to the table from a height of 30 cm, the rebound height should be about 23 cm. 4 The desktop should be dark and dull, with a 2 cm wide white edge line along each 2.74m desktop edge and a 2 cm wide white end line along each 1.525m desktop edge. The competition field is divided into two equal competition areas by a vertical net parallel to the end line, and the whole area of each competition area should be a whole. In doubles, each table area should be divided into two equal "half areas" by a 3 mm wide white center line. The midline is parallel to the sideline and should be regarded as a part of the right half. The net gear 1 net gear includes a net gear, a hanging rope, a net post and a clip part for fixing them on the table. The net should be hung on a rope, and both ends of the rope should be tied to an upright net post with a height of 15.25 cm, and the distance from the outer edge of the net post to the outer edge of the sideline is 15.25 cm. 3 The distance from the top of the whole net to the table 15.25cm. The bottom of the whole net should be as close to the table as possible, and its two ends should be as close to the net column as possible. The ball 1 ball shall be spherical with a diameter of 40mm. The two balls weigh 2.7 grams. The ball should be made of celluloid or similar plastic, white or orange, and dull. Racket 1 The size, shape and weight of the racket are not limited, but the bottom plate should be flat and hard. The thickness of the bottom plate should be at least 85% of the natural wood, and the adhesive layer for strengthening the bottom plate can be made of fiber materials such as carbon fiber, glass fiber or compressed paper, and each adhesive layer should not exceed 7.5% or 0.35 mm of the total thickness of the bottom plate. The racket surface for hitting the ball should be covered with a layer of ordinary granular glue with outward particles, and the thickness of the glue should not exceed 2mm；; Or sponge rubber covered with inward or outward particles, together with adhesive. The "ordinary particle rubber" with a thickness of not more than 4 mm is a layer of foamed natural rubber or synthetic rubber, and its particles must be distributed over the whole surface, with an average density of not less than 65,438+00 particles/cm2 and not more than 30 particles. "Sponge rubber" means that a layer of foam rubber is covered with a layer of ordinary granular rubber, and the thickness of ordinary granular rubber is not more than 2mm. The covering should cover the whole racket face, but not beyond its edge. The portion near the handle and the finger grip portion may not be covered, or may be covered with any material. 5. The sole plate, any interlayer in the sole plate, and any covering layer and adhesive layer used for hitting the ball shall be a whole with uniform thickness. Both sides of the racket, whether covered or not, must be dull, one side is bright red and the other side is black. Due to accidental damage, wear or fading, the integrity and color consistency of the racket face are slightly different. It can be used as long as the racket face performance has not changed significantly. When a player needs to change his racket at the beginning and during the game, he must show his opponent and the referee the racket he will use and allow them to check it. Definition 1 turn: a period of time when the ball is in the game. 2 Game state: From the last moment when the ball was in a static state before being thrown, the ball was in a game state until the current round was judged as re-serving or scoring 1 minute. 3 serve again: no score in one round. 4 1 min: judging round. Clap your hands: the hand that holds the racket. 6 Don't clap your hands: the hand that doesn't hold the racket. Non-clapping arm: non-clapping arm 7 hitting the ball: touch the ball with the racket held in your hand or the lower part of your wrist clapping. 8 Blocking: After the opponent hits the ball, the ball moves above or in the direction of the table, without touching the table area of his own side, that is, touching his own player or anything he wears, which is called blocking. Server: The first player to hit the ball in a round. 10 receiver: the second player to hit the ball in a round. Referee: A person appointed to manage a game. Referee's assistant: A person appointed to assist the referee in some way. 13 anything an athlete "wears or brings": including anything he wears or brings at the beginning of a round, but excluding the match ball. 14 device for "crossing or bypassing" the net: except when the ball passes between the net and the table or between the net and the net rack. The "terminal line" in the 15 table includes infinite extension lines at both ends of the terminal line. At the start of service 1, the ball is naturally placed on the palm that does not clap, and the palm is open and remains still. The server must throw the ball almost vertically upward by hand, and must not make the ball rotate, and make the ball rise not less than 16 cm after leaving the palm that does not clap. The ball must not touch anything before falling and being hit. When the ball falls from the highest point, the server can hit the ball, so that the ball first touches its own table, then crosses or bypasses the net device, and then touches the table of the receiver. In doubles, the ball should touch the right half of the server and receiver. 4. From serving to being hit, the ball should always be higher than the level of the table and outside the end line of the server; Moreover, from the point of receiving service, the ball cannot be blocked by the body of the server or his doubles partner or anything (belt) they wear. Once the ball is thrown, the server's non-racket arm should immediately move away from the space between the ball and the net, which is defined by the ball and the net and their upward extension. When a player serves, the referee or assistant referee depends on whether he serves in accordance with the statutory provisions. If the referee has doubts about the legality of a player's serve, he will decide to serve again at the first appearance in a game and warn the server. The referee once again doubts the legality of the player or his doubles partner's service and will award the server 1. ③ No matter whether it is the first time or at any time, as long as the server obviously fails to serve according to the legal provisions, there is no need for warning, and it should be awarded to the server 1. When an athlete can't strictly abide by some rules of legal service due to injury, the referee can make a decision to avoid execution. After returning the opponent's serve or return, our players must hit the ball so that it directly crosses or bypasses the net, or touches the net before touching the opponent's table. Competition order 1 singles, the server serves first, then the receiver and receiver return the ball together, and then they return the ball alternately and legally. In the doubles match, first, the player legal serve, then the serve and the serve, then the server's partner, and then the players take turns to fight back. In the 1 round, it should be judged as a heavy serve: ① When the ball from the server crosses or bypasses the net device, if it touches the net device, it will become a legal serve or be blocked by the receiver or his companions. (2) If the receiver or companion is not ready, the ball has been served: the receiver or companion has not tried to hit the ball. (3) Due to the interference beyond the athlete's control, the athlete failed to serve, counterattack or abide by the rules successfully. (4) The referee or deputy referee suspends the game. ⑤ When an athlete in a wheelchair receives a service due to physical disability, the ball appears the following situations ◆ After touching the receiver table, the ball leaves the receiver table in the direction of the net ◆ The ball stops on the receiver table ◆ In singles, after touching the receiver table, the ball leaves the table from any sideline. 2. The game can be suspended under the following circumstances: ① Because of the need to correct the wrong order or orientation of serving and receiving; (2) Because of the rotating serve method; ③ For warning or punishing athletes; (4) The results of this round of competition may be affected by the interference of the competition environment. (3) In the doubles match, the player made a mistake in serving or receiving the service. 1 point. Except for the round that was sentenced to serve again, each player scored one point in the following situations: 1, the opposing player made a mistake in serving; 2 the opposing player failed to hit the ball correctly; After the player serves or returns the ball, before the opponent hits the ball, the ball touches anything except the net; After the opposing player hits the ball, the ball does not touch his own platform, but crosses his own platform or end line; 5 the other side blocks the net; 6 combo; 7 opponents hit the ball with an irregular racket face; 8 The opposing player or any player he wears moves the table; 9. Device that the opposing player or anything he wears makes the game table move and touch the net; 10 If the opposing athlete does not clap his hands or touch the table; 1 1 In doubles, the opposing players hit the ball in the wrong order; 12 When the receiving and serving rotation method is implemented, the receiving and serving side returns fire 13 times in a row, including receiving and serving. For one game, the winner is 1 1 points, and the winner is 10 points after the draw. A game should consist of an odd number of games. Select the service, 1 Receive the service and draw the power of this side and that side. When a player chooses to receive the service first, or choose to be in a certain position first, another player must have another choice. After each score of 2 points, the receiver becomes the server, and so on, until the end of the game, or until the scores of both sides reach 10 or the service change method is implemented. At this time, the order of serving and receiving remains unchanged, but each player only serves 1 minute in turn. The first server determines the first server, and then the first receiver determines the first receiver. In the following game, after the first server is determined, the first receiver should be the player who served for him in the previous game. In the doubles match, every time the service is changed, the front receiver should become the server, and the partner of the front receiver should become the first server in the first game and receive the service first in the next game. In the doubles final, when one side scores 5 points first, the receiver should exchange the order of receiving the service. In one game, one side of the game in one direction will switch to the other direction in the next game. In the deciding game, when one side scores five points first, the two sides have to switch directions. The order and direction of serving and receiving are wrong. Once the referee finds that the order of serving and receiving is wrong, he should immediately suspend the game, and the player who should serve or receive the service should serve or receive the service according to the score on the field. In doubles, when mistakes are found, they should be corrected in the order established by the side with the right to serve first, and the game will continue. Once the referee finds that the players should switch places but not switch places, he should immediately suspend the game and make corrections according to the correct positions of the players on the field in the order established at the beginning of the game, and then continue the game. In any case, all the scores before the error is found are valid. Rotation serve method 1 If a game is still not over after 10 minutes, unless both sides score at least 9 points, or at any time before that, rotation serve method shall be implemented at the request of both players. (1) At that time, the ball was still in the game state, and the referee should immediately suspend the game. The suspended server serves and continues the game. ② If the ball has not entered the game state by the time limit, it should be served by the receiver in the last round to continue the game. After that, each athlete serves 1 point in turn until the end of the game. If the receiver makes 13 legal counterattacks, the server will be rewarded with 1 minute. Once the service change method is implemented, the rest of the game must continue to be implemented until the end of the game.