要罚好任意球要有准确的角度弧度和力度。
Arbitrary fine ball to have a good accurate perspective , comparing and intensity.
实验结果表明：该实验方法能较准确的测量物体旋转的角度。
The result reveals that this method of experiment can measure Angle accurately.
实验结果表明：该实验方法能较准确的测量物体旋转的角度。
The result reveals that this method of experiment can measure Angle accurately.
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