Tennis is a ball game, usually played between two singles players or a combination of two, in which players hit a tennis ball with a tennis racket across a net on a tennis court.Tennis is a sport suitable for all ages. From 8-9 year olds to 60-70 year olds, everyone can exercise according to their physical strength. By insisting on tennis activities for a long time, young people can maintain their youthful vitality and fitness, and the elderly can maintain strong energy, delay aging, prolong life, and be full of emotions. Here introduce:
The material of the tennis ball
The feature of tennis ball
The material of the tennis ball introduce.
Tennis balls are divided into bladders and felts. The bladders are made of rubber. The felt wool content of the game ball is very high, and the wool content of the general training ball is not high. In addition, the game ball is air pressured, and it will run out of gas after playing for a while, so it is not very durable. The training ball is a pressure-free ball, relying on the elasticity of the inner bladder, which is more durable.
The feature of tennis ball introduce.
The exercise value of tennis is very high. It is not only a pastime, a means of improving health, but also an artistic pursuit and enjoyment, and an exciting competition. Playing tennis is civilized, elegant, and graceful in action. Once a year, i hit a good ball and play a string tone, which makes people feel very excited and happy.
