| 摘要 |
A training golf ball apparatus having an asymmetrical weighting or cavity means extending from proximal the center of the training golf ball to proximal the surface. The weighting or cavity means has a density different from the general density of the training golf ball. A guideline circumference marks the surface of the training golf ball along a circumference which, if the training golf ball was bisected, would reveal radial symmetry of the weighting or cavity means. An orthogonal guideline circumference, orthogonal to the guideline circumference, marks the surface of the training golf ball along a circumference which, if the training golf ball was bisected, would reveal radial symmetry of the weighting or cavity means. |
