9 天
Tech Xplore on MSNNew geometric design of material provides safer bicycle helmetBy using new geometric shapes in shock-absorbing material, researchers at the Universities of Gothenburg and Isfahan have ...
By using geometric shapes in the shock-absorbing material, researchers have developed a bicycle helmet that provides better protection against head injuries. The material absorbs shock by contracting ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果