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.
研究者可以精确地测量出先
法量化的各种有关投
方面的数据——从肩关

手臂移动角度的速度,到膝盖和手肘的张力。
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-国际
Science and technology
Science and technology The precise impact that Brownlee's videos have on the sales of products he covers is unquantifiable, especially in the case of blockbuster items that sell in the tens or hundreds of millions, such as new Apple and Samsung phones.
布朗利视频对所涵盖产品销售的精确影响难以量化,尤其是在那些销售额达数千万甚至数亿的大热产品上,比如新款苹果和三星手机。