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

您現在的位置: Language Tips> Easy English> Odd Question  
 





 
Why do golf balls have dimples?
[ 2006-01-09 08:00 ]
golfball  
Why do golf balls have dimples? Notes:

So that they look cute? NO!

Because the dimples maximize the distance golf balls travel. Dimpled balls travel up to four times farther than smooth-surfaced golf balls.

In the early days of golf, smooth-surfaced balls were used until golfers discovered that old, bumpy balls traveled longer distances. The science ofaerodynamicshelps explain the dimpled phenomenon. The dimples reduce the drag on a golf ball by redirecting more air pressure behind the golf ball rather than in front of it. The higher levels of pressure behind the golf balls force them to go far distances.

The dimples change the levels of pressure by bringing the main air stream very close to the surface of the golf ball. The dimples, or "turbulators," increase the turbulence in the layer of air located next to the surface of the ball. This high-speed air stream near the ball increases the amount of pressure behind the ball-thereby forcing the ball to travel farther.

 

 

 

 


aerodynamics:空氣動力學

 
 
相關文章 Related Stories
 
 
 

本頻道最新推薦

     
  為什么下雪時天氣暖
  You are the smartest fish I've ever seen!
  Dog burger
  為什么老了脾氣好
  飛蛾為什么撲火

論壇熱貼

     
  開個題目大家扯:hotel & restaurant
  追求某人
  請教工商年檢如何翻譯
  How to translate “中國老字號”into English?
  "港股直通車"怎么翻譯?
  兩免一補怎么說?




主站蜘蛛池模板: 亚洲精品欧美精品国产精品 | 操美国女人 | 午夜精品尤物福利视频在线 | 欧美成人免费全网站大片 | 一及黄色毛片 | 久久久久免费精品国产 | 欧美性aaaxxx级 | japanesevideo乱子| 欧美国产精品一区二区免费 | 日本一区三区二区三区四区 | 精品在线免费视频 | 91网在线| 毛片高清一区二区三区 | 久久国产三级 | 韩国good三级在线观看久 | 久久综合久久精品 | 波多野结衣福利视频 | 美女黄网站视频 | 成人123| 欧美1区二区三区公司 | 美女在线网站免费的 | 欧美视频在线观看网站 | 国内精品久久影视 | 99久久国产免费福利 | 特黄特色三级在线播放 | 一区二区三区在线 | 久久久久无码国产精品一区 | 国产精品秦先生手机在线 | 一级一片免费视频播放 | 抱着cao才爽免费观看 | 中国成人免费视频 | 国产精品青草久久福利不卡 | 国产高清一区二区三区 | 日韩制服诱惑 | 亚洲视频在线观看地址 | 成人毛片手机版免费看 | 色偷偷在线刺激免费视频 | 黄色美女视频免费看 | 国产精品日韩一区二区三区 | 欧美日本一区二区三区道 | 欧美一区二区三区在线播放 |