| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve a spin property, and especially, an approach control property, and at the same time, improve a flying property, and sufficiently impart both properties, and make it suitable especially for a player whose head speed exceeds 40 m/sec. SOLUTION: In this golf ball which has a cover and a core, and on the surface of which a large number of dimples are formed, when the effective contact area of the ball on the club face when the ball is shot by a head speed of 50 m/sec with a driver, is taken as A, and a virtual contact area of the ball is taken as B, the value of A/B is 0.40-0.60, and also, the dimple surface area occupying rate is 71% or higher.</p> |
