Researchers can precisely measure previously unquantifiable aspects of pitching—everything from the angular velocity of the arm at the shoulder joint to tension on the knees and elbows.
研究者可以
测量出先前无法量化
各种有关投球
面数据——从肩关节部位手臂移动角
，到膝盖和手肘张力。
,难以计算,难以估量,无法量化Researchers can precisely measure previously unquantifiable aspects of pitching—everything from the angular velocity of the arm at the shoulder joint to tension on the knees and elbows.
研究者可以测量出先前无法量化各种有关投球面数据——从肩关节部位手臂移动角，到膝盖和手肘张力。
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