High-speed imaging reveals that the squeak of soft–rigid frictional interfaces, like sneakers sliding on a basketball court, arises from intersonic opening slip pulses—analogous to earthquake ruptures—that thin ridges on the rubber confine to repeat at a musical frequency.
Что думаешь? Оцени!。im钱包官方下载对此有专业解读
https://developer.android.com/topic/architecture?hl=en。PDF资料是该领域的重要参考
过去，中国企业更多是以“非科技方案解决者”的身份进入中东；而如今，通过与当地资本、本土企业的深度绑定，通过参与当地智慧城市的共建，中国企业正在向“生态共建者”的角色演进。
Фото: Fredrik Sandberg / TT News Agency / Reuters