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: 国产精品一国产精品免费 | 欧美性色xo影院69 | 真实国产精品视频国产网 | 日本b站一卡二卡乱码入口 日本s色大片在线观看 | 高清一级淫片a级中文字幕 高清一区二区 | 亚洲一区二区三区久久 | 成人全黄三级视频在线观看 | 久草国产视频 | 欧美一级在线毛片免费观看 | 一区二区三区免费高清视频 | 日韩精品视频在线 | 99r精品在线 | 91中文字幕网 | 国产精品国产三级在线高清观看 | 中文字幕在线视频网站 | 鲁老汉精品视频在线观看 | 欧美一区精品二区三区 | 自拍视频在线观看视频精品 | 久久国产精品免费观看 | 久久亚洲国产的中文 | 亚洲精品国产一区二区在线 | 国产4tube在线播放 | 欧美视频网站在线观看 | 成人精品第一区二区三区 | 中文国产成人精品久久无广告 | 久久99精品久久久久久野外 | 91香焦国产线观看看免费 | 国产一区二区三区精品视频 | 亚洲天堂2016| 九九国产在线视频 | 日本一级毛片高清免费观看视频 | 国产高清视频在线 | 亚洲天堂网视频 | 欧美成人一区二区 | 91精品专区 | 中国美女一级黄色片 | 波多野结衣在线免费观看视频 | 欧美成人亚洲欧美成人 | 国产高清自拍视频 | 亚洲在线一区二区三区 | 另类一区二区三区 |