开始练习正手攻球，要牢记几个“1/4”

叫姐姐016611 · 5 小时前

　　四分之一定律
　　开始练习正手攻球，要牢记几个“1/4”：手臂挥拍的轨迹是1/4圆，球拍摩擦球也是球的1/4，手臂挥拍放松至起始位置也是按原先的1/4圆弧。

　　技巧：
　　正手攻球，执拍右手拇指压拍，食指放松，中指顶拍，在划1/4圆弧过程中，拇指和中指有1/4圆弧的微调动作，击球上部1/4圆弧。同时前臂也要有1/4圆弧的旋转。
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开始练习正手攻球，要牢记几个“1/4”

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