| 摘要 |
<p>A ball is disclosed which has improved aerodynamic properties. The improvement can be attributed to the provision of compartments (11 ', 12', 13' 14') inside the ball by the provision of reinforcement elements, such as walls (11, 12, 13, 14), pins/or ribs (42) extending across the interior of the ball. There can also be provided a pattern of dimples (50) on the surface, the dimples having a "D" shape.</p> |
