久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

 
 
 

Modern Tennis Technique of Sliding

VOA 2015-11-20 08:46

 

Modern Tennis Technique of Sliding

Get Flash Player

Sliding to return a shot is a common tennis practice on clay courts, but lately players have started using it on grass and hard courts as well. Scientists say it is faster than running and allows athletes to change direction more quickly.

"The speed of the game has increased a lot because the players are serving faster than years before," said Daniel Ura, a researcher in the University of Sheffield's Department of Mechanical Engineering. "It could be because of the materials of the rackets, or could be the strings as well. But I think it's a necessity of the players to reach the ball faster."

So far, only a few top players have mastered the technique off clay. For effective slides, the shoes must perfectly match the court's surface, and this is where the science comes in handy.

"I think it will become more like a Formula 1 race probably," Ura said, with the right shoe depending on the weather or the surface conditions.

Looking for the best match between shoe and surface, researchers at the University of Sheffield have built a special mechanical rig that can measure the shoe traction.

"In order to do that," said Matt Carre, an instructor in the mechanical engineering department, "we need to understand a number of parameters, including how the shoe changes, how the properties of the shoe affect that interaction, how the properties of the tennis courts affect that, and also other factors like temperature" and how the players slide or move around the court.

The research, in partnership with the International Tennis Federation, may lead to different materials for tennis shoes, different court surfaces, and ultimately faster and even more exciting tennis matches.

Vocabulary

racket:球拍

traction:牽引力

來源:VOA

編輯:丁一

上一篇 : Europe Needs to Do More for Refugees
下一篇 :

 
中國日報(bào)網(wǎng)英語點(diǎn)津版權(quán)說明:凡注明來源為“中國日報(bào)網(wǎng)英語點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國日報(bào)網(wǎng)簽署英語點(diǎn)津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請與010-84883561聯(lián)系;凡本網(wǎng)注明“來源:XXX(非英語點(diǎn)津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請與稿件來源方聯(lián)系,如產(chǎn)生任何問題與本網(wǎng)無關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請?zhí)峁┌鏅?quán)證明,以便盡快刪除。

中國日報(bào)網(wǎng)雙語新聞

掃描左側(cè)二維碼

添加Chinadaily_Mobile
你想看的我們這兒都有!

中國日報(bào)雙語手機(jī)報(bào)

點(diǎn)擊左側(cè)圖標(biāo)查看訂閱方式

中國首份雙語手機(jī)報(bào)
學(xué)英語看資訊一個(gè)都不能少!

關(guān)注和訂閱

本文相關(guān)閱讀
人氣排行
熱搜詞
 
 
精華欄目
 

閱讀

詞匯

視聽

翻譯

口語

合作

 

關(guān)于我們 | 聯(lián)系方式 | 招聘信息

Copyright by chinadaily.com.cn. All rights reserved. None of this material may be used for any commercial or public use. Reproduction in whole or in part without permission is prohibited. 版權(quán)聲明:本網(wǎng)站所刊登的中國日報(bào)網(wǎng)英語點(diǎn)津內(nèi)容,版權(quán)屬中國日報(bào)網(wǎng)所有,未經(jīng)協(xié)議授權(quán),禁止下載使用。 歡迎愿意與本網(wǎng)站合作的單位或個(gè)人與我們聯(lián)系。

電話:8610-84883645

傳真:8610-84883500

Email: languagetips@chinadaily.com.cn

主站蜘蛛池模板: 亚洲精品一区二区四季 | 亚州精品一区二区三区 | 精品玖玖玖视频在线观看 | 久久综合日韩亚洲精品色 | 乱子伦农村xxxx视频 | 免费看成人 | 精品国产自在现线看久久 | 未满14周岁啪啪网站 | 欧美 日韩 国产 成人 在线观看 | 亚洲精品成人一区二区 | 国产原创在线视频 | 先锋影音xfyy5566男人资源 | 99爱视频精品免视看 | 中文字幕亚洲精品久久 | 中字毛片 | 国产成人精品视频播放 | 天天看a | 香蕉香蕉国产片一级一级毛片 | 亚洲男女网站 | 国内成人免费视频 | a级黄色毛片免费播放视频 a级精品九九九大片免费看 | 97国产免费全部免费观看 | 91日本在线观看亚洲精品 | 中国一级片免费看 | 未满14周岁啪啪网站 | 最刺激黄a大片免费网站 | 99免费在线观看 | 欧美成人se01短视频在线看 | 在线色网址 | 永久免费不卡在线观看黄网站 | 波多野结衣一级片 | 日本三级网站 | 亚欧精品在线观看 | 欧美成人欧美激情欧美风情 | 中文字幕成人在线 | 国产一级片观看 | 国产成人一区二区三区精品久久 | 亚洲精品国产精品国自产观看 | 成人国产在线视频在线观看 | 日韩区在线 | 国产欧美一区二区精品久久久 |