| 摘要 |
Device for tennis training, whereby the trainee must play against certain target objects or fields according to a program. If the target object is struck an acoustic or visual signal is emitted. The target objects are linked with a computer which sets a specific program according to the playing standard of the learner. A ball throwing machine, also linked with the computer, sends the balls to the trainee and indicates the individual target objects or target fields. The computer evaluates the hits and displays the result on a display table. |
