| 摘要 |
A golf club head which, in vertical cross section at its intended ball-centre-striking plane, (1) contains a convex ball-striking curve B, (2) below that curve is either substantially flat or contains a curvature which extends that of the top-half ball-striking curve B, and (3) the curved part of the face defines less than a complete semi-circle and is other than semi-circular in profile. <IMAGE> |
