日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

 
 
 

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?qǐng)?bào)網(wǎng)英語點(diǎn)津版權(quán)說明:凡注明來源為“中國日?qǐng)?bào)網(wǎng)英語點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國日?qǐng)?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(qǐng)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(qǐng)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(qǐng)?zhí)峁┌鏅?quán)證明,以便盡快刪除。

中國日?qǐng)?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?qǐng)?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?qǐng)?bào)網(wǎng)英語點(diǎn)津內(nèi)容,版權(quán)屬中國日?qǐng)?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: [email protected]

主站蜘蛛池模板: 精品福利av导航 | va在线播放 | www午夜视频 | 日本三级带日本三级带黄国产 | 99久久一区二区 | 夜色在线影院 | 国产精品久久久天天影视香蕉 | 国产在线视频2019最新视频 | 很黄很色的网站 | 日韩黄色在线视频 | 傲视影院午夜毛片 | 国产日| 日韩免费电影 | 精品国产一区二区三区成人影院 | 日本喷潮 | 亚洲日本va | 欧美在线激情 | 国产在线毛片 | 欧美日韩性高爱潮视频 | 国产美女极品免费视频 | 欧美区日韩区 | 日本玖玖 | 久久国产精品偷 | 免费人成网站线观看合集 | 九九色网站 | 久草精品在线 | 色欧美片视频在线观看 | 小明成人永久在线看 | 日韩城人免费 | 日本特黄aa一大片 | 色网在线 | 国产二区三区视频 | 日韩精品久久久久影院 | 99在线热播精品免费 | 神马久久蜜桃 | 午夜电影网址 | 杏导航aⅴ福利网站 | 污污的网站免费观看 | 成人久久18免费软件 | 黄色电影在线免费观看 | 911影院|