... edger 轧边机；磨边器；弯曲膜瞠 edge-to-edge contact 边-边接触 edge-to-surface contact 边-面接触 ...
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edge to edge contact model 边
edge-to-edge contact
边缘接触
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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.
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。
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