| 摘要 |
A training machine which projects a ball such as a soccer ball for presentation to the player. The machine propels balls with a maximum degree of freedom in selecting ball trajectories at unlimited angles, distances and velocities by mounting the propelling wheels on a plate rotatable approximately 120 degrees. The machine has an adjustable foot for adjusting the tilt of the rotatable plate. The machine is light weight and easily assembled and disassembled for transportation and storage. An electrical control regulates the speed of each projection wheel, providing an infinite variety of spin control to the projected ball.
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