英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

VOA标准英语2016--新材料可减低冲击保护运动员

时间:2016-02-06 18:05来源:互联网 提供网友:nan   字体: [ ]
    (单词翻译:双击或拖选)

New Material May Reduce Concussion1 Effects 新材料可减低冲击保护运动员

As the 2016 National Football League season reaches its summit at the Super Bowl this coming Sunday (2/7), scientists are trying to learn how to more effectively protect football players from dangerous and damaging concussions2.

Researchers at Cardiff and Cambridge Universities say their origami-based material may solve the problem.  

Powerful impacts and falls are an inevitable3 part of American football, the most popular sport in the United States.

In 2010, the National Football League acknowledged that despite protective helmets players often suffer dangerous concussions, leading to a life-long brain injury called "chronic4 traumatic encephalopathy."

Scientists at Cardiff and Cambridge universities say with the help of a supercomputer, they produced a multi-layered material that dissipates the energy of impact much better than currently used polymer foams5.

“It is a series of folds based on origami.  So if you were to stack a series of playing cards at home, perhaps then you would come up with a configuration6 that might not look too dissimilar to this," said Peter Theobald of Cardiff University.

Testing geometrically complex shapes, researchers found that by changing the orientation7 of cell walls they could activate8 the ability of the material, they named C3, to absorb impacts from various angles.

Samples printed in a 3-D printer were tested for impacts and the results were again compared with computer models.  Scientists say by combining 3-D printing with the standard manufacturing process of injection molding, the new material can be produced in specific shapes.

“I think with this kind of material we can more than improve the performance of the helmet ... we can design a specific helmet, for example, for each head in the world," said Rafael Santiago of University of Sao Paulo.

Researchers say if the same design could also be printed in 3-D metal printers, it could be help protect military vehicles from various explosive devices.   


点击收听单词发音收听单词发音  

1 concussion 5YDys     
n.脑震荡;震动
参考例句:
  • He was carried off the field with slight concussion.他因轻微脑震荡给抬离了现场。
  • She suffers from brain concussion.她得了脑震荡。
2 concussions ebee0d61c35c23e20ab8cf62dd87c418     
n.震荡( concussion的名词复数 );脑震荡;冲击;震动
参考例句:
  • People who have concussions often trouble thinking or remembering. 患脑震荡的人通常存在思考和记忆障碍。 来自互联网
  • Concussions also make a person feel very tired or angry. 脑震荡也会使人感觉疲倦或愤怒。 来自互联网
3 inevitable 5xcyq     
adj.不可避免的,必然发生的
参考例句:
  • Mary was wearing her inevitable large hat.玛丽戴着她总是戴的那顶大帽子。
  • The defeat had inevitable consequences for British policy.战败对英国政策不可避免地产生了影响。
4 chronic BO9zl     
adj.(疾病)长期未愈的,慢性的;极坏的
参考例句:
  • Famine differs from chronic malnutrition.饥荒不同于慢性营养不良。
  • Chronic poisoning may lead to death from inanition.慢性中毒也可能由虚弱导致死亡。
5 foams ad44dea11e6fd44b9405245602936044     
n.泡沫,泡沫材料( foam的名词复数 )
参考例句:
  • The sea water foams under the bow. 海水在船首下面泛起浪花。 来自《现代汉英综合大词典》
  • The meter handles gases, liquids, foams, and slurries. 这流量计可以处理气体,液体,泡沫状物和稀浆等。 来自辞典例句
6 configuration nYpyb     
n.结构,布局,形态,(计算机)配置
参考例句:
  • Geographers study the configuration of the mountains.地理学家研究山脉的地形轮廓。
  • Prices range from $119 to $199,depending on the particular configuration.价格因具体配置而异,从119美元至199美元不等。
7 orientation IJ4xo     
n.方向,目标;熟悉,适应,情况介绍
参考例句:
  • Children need some orientation when they go to school.小孩子上学时需要适应。
  • The traveller found his orientation with the aid of a good map.旅行者借助一幅好地图得知自己的方向。
8 activate UJ2y0     
vt.使活动起来,使开始起作用
参考例句:
  • We must activate the youth to study.我们要激励青年去学习。
  • These push buttons can activate the elevator.这些按钮能启动电梯。
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
TAG标签:   VOA标准英语  VOA常速英语
顶一下
(2)
100%
踩一下
(0)
0%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴