如果字太多可以看 bold 粗体字
- 我们在游泳时均受到流体力学定律的支配。因为身体在水中滑动,所以必须克服水的阻力,而在这个过程中,有几个因素会介入:身体直接接触水的形状,身体面积, 滑动时身体的密度和位置。总的来说,身体通过在水中滑动来克服阻力。水对抗身体的层流摩擦力与其黏度以及与身体表面的摩擦力有关。所以,如果我们这样想,我们可以说身体上的毛发会引起更多的摩擦,当它被拔掉时,会有更多的滑动。
- Shaving is the ritual swimmers perform before a big meet, removing all hair that cannot be covered by a swim cap or suit. (And, truth be told, a lot of the hidden hair will go as well.) The goal is to reduce drag (a small factor) and enhance the mental gain from a more streamlined sensation in the water (a big factor).
- 如果人体体毛过多,会使人体皮肤变得不是那么平滑,人与水相互摩擦之下,表面积增大后,会产生阻力,游泳比赛胜负就在零点几秒之间,如果别人都刮了,你没有刮,本来你有夺冠实力的,因为体毛阻挡,错失冠军,悔不当初。
- Reducing drag is key to swimming faster, and body hair creates drag — up to 10kg of extra weight, to be exact! Removing that hair will help you swim faster almost immediately, similar to putting on a tech suit.A few studies have evaluated the benefits of shaving. In one study of 9 breaststroke swimmers, researchers found that after shaving, the swimmers experienced a lower level of blood lactate concentration, decreased VO2, and longer distance per stroke.
主要是:阻力 & 摩擦力 & 心理作用(这个好像和科学无关我们暂且忽视它:)
我试写看答案,如有不足之处,还请谅解纠正我~
Berdasarkan pernyataan di atas, tindakan perenang itu boleh membantu mereka berenang lebih baik dalam pertandingan tersebut dengan mengurangkan daya geseran di antara air dan permukaan badan. Bulu-bulu badan akan menghasilkan daya geseran semasa berenang. Jika seorang perenang tidak mencukur bulu badan, daya geseran di antara permukaan badan dan air akan bertambah lebih banyak, daya tersebut akan memperlahankan kelajuan perenang. Oleh itu, melalui mencukur bulu badan, perenang dapat menggelincirkan(?) badan serta mengurangkan daya geseran di antara permukaan badan dan air, membantu mereka berenang lebih baik dan laju dalam pertandingan.
参考文献:
- 【奧運.冷知識】剃體毛能夠提升游泳速度嗎?
- US Olympic Swimming Trials: Why swimmers shave body hair before races - Sports Illustrated
- 为什么游泳运动员都要剃腋毛,不剃的话会有什么影响_体育吧
- Why Do Swimmers Shave Their Bodies? - MySwimPro
- Gaya hambat - Wikipedia bahasa Indonesia, ensiklopedia bebas
- why do you have to shave for swimming - Google Search
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