1.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.
1.研究者可以精确地测出先前
法
化的各种有
投
方面的数据——从肩
位手臂移动角度的速度,到膝盖和手肘的张力。