| 摘要 |
A practice ball, particularly a golf ball, comprising a spherical body (10) such as a conventional golf ball, and a drag member (20) seamed to the body. The drag member comprises a flexible tail member (22) attached to the body (10) by a stiff cord (24) so that spin on the body (10) is imparted to the tail member (22). When the ball is struck or propelled through the air the drag member (20) retards the flight. |
