| 摘要 |
A ball game training apparatus includes a positioning device, a first pivot device connected to the positioning device and turnable relative to the positioning device in X-axis direction, a second pivot device connected to the first pivot device and turnable relative to the first pivot device in Y-axis direction, and a driven device connected to the second pivot device and turnable relative to the second pivot device and having a force-receiving ball disposed remote from the second pivot device and strikable to move by an external force. |
