| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a table tennis racket increasing the speed of a struck ball because a striking surface hardly receives air resistance. <P>SOLUTION: The table tennis racket is provided with multiple air holes in the striking surface. The air holes are round, triangular, quadrangular, trapezoidal, deformed such as heart shape, and a combination of these forms. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
