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"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.。heLLoword翻译官方下载对此有专业解读
Just hours after his graduation in 1952, the newly commissioned Ensign Lovell married her.，更多细节参见搜狗输入法2026
她和丈夫正認真考慮賣車以償還貸款並支付房租。。业内人士推荐搜狗输入法2026作为进阶阅读
Фото: Fabrizio Bensch / Reuters