"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.
陆逸轩：那段时间非常忙，几乎没有空去见朋友，甚至连好好放松一下的时间都没有。比赛结果公布后，我们还需要在华沙连续三天演出三场庆典音乐会，中间完全没有休息日。真正能够停下来、开始享受你说的这种“胜利”，并且回过头来反思和整理心境，其实是到了圣诞节之后。我年前最后一站演出的地方在台湾，那里有家人和朋友，我索性决定留下来，不再给自己安排任何具体计划，只是单纯地生活、休息。
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weird length guess. Anything else you could do?
Трамп высказался о непростом решении по Ирану09:14。同城约会对此有专业解读
void unref2(void *x) {
4 days agoShareSave，更多细节参见heLLoword翻译官方下载