... 发旋转球：spinning service 发飘球；日本式发球：floater；floating [Japanese] service 发上手飘球：overhand floater ...
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根据乒乓球运动中击球时用力方向、拍面角度、发力大小、旋转性能等方面阐述对球的飞行弧线的影响。
The paper discusses the influence of the direction and strength of force, the angles of the bat and spinning on the balls flying curve.
发旋转秋的关键是要球拍擦过乒乓球的边缘部分，而不是结结实实的打在乒乓球的中心。
Make sure that you are skimming the edge of the ball, rather than hitting towards the center of the ball. The closer to the edge contact is made, the more spin you will generate.
你可以成功地打出高吊球、小球、半截击和高压扣杀，并且大部分的第二发球具有良好的深度与旋转。
You can successfully execute lobs, drop shots, half volleys, overhead smashes, and have good depth and spin on most second serves.
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