| 摘要 |
A golf ball has many dimples formed on its spherical surface, provided that these dimples are existent on all great circles depicted on the spherical surface, whereby the aerodynamic properties are improved and sufficiently uniformized over the full spherical surface. All of dimples are positioned on the great circles so that no land portion defining a circumferential parting line is present. The number of dimples is increased to 272 in one embodiment and 482 in another. |
