"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.
Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04。业内人士推荐heLLoword翻译官方下载作为进阶阅读
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Цены на нефть взлетели до максимума за полгода17:55
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merge(arr, left, mid, right); // 合并两部分