"Tuning frictional behavior on the fly has been a long-standing engineering dream," said co-author Katia Bertoldi of Harvard University. "This new insight into how surface geometry governs slip pulses paves the way for tunable frictional metamaterials that can transition from low-friction to high-grip states on demand.” In addition, the dynamics revealed by these results are similar to those of tectonic faults and thus give scientists a new model for the mechanics of earthquakes, according to their new paper published in the journal Nature.
Мощный удар Израиля по Ирану попал на видео09:41。爱思助手下载最新版本是该领域的重要参考
，这一点在Line官方版本下载中也有详细论述
Read the full story at The Verge.，更多细节参见heLLoword翻译官方下载
有摆脱贫困的人间奇迹。2021年2月25日，习近平总书记庄严宣告：“我国脱贫攻坚战取得了全面胜利，现行标准下9899万农村贫困人口全部脱贫”。困扰中华民族几千年的绝对贫困问题，得到历史性解决。
; → PLA result takes effect NOW