"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.
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Former MasterChef presenter Gregg Wallace has abandoned his legal claim against the BBC and will not be receiving any payment in costs or damages.。关于这个话题，旺商聊官方下载提供了深入分析
本次的年度征文设题很巧妙，体现了现代科技与传统人力对决的意思。
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