| 摘要 |
A tennis racquet has string holes which lie alternately on opposite sides of the center plane completely around the racquet head. Except in the corners, the cross string holes, and the upper main strings holes, are located at a constant offset distance of 4.5 millimeters (mm) away from the center plane of the frame. The corner string holes and remaining lower main string holes, which mainly lie in the throat bridge, all have a constant reduced stagger of 2 mm.
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