| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a golf club head which has characteristics to meet the requests from players and the desires from manufacturers and facilitates the production. SOLUTION: At least parts of golf club heads H1, H2, H3 and H4 are made of porous metal. It is desired that the porous metal has a voidage, bore and layout in a controllable manner.</p> |
