"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.
此外，在盧旺達與剛果民主共和國之間，兩國在華盛頓簽署和平協議後仍爆發戰鬥。
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本法所称原子能，也称核能，是指裂变、聚变、衰变等核反应释放的能量。，更多细节参见服务器推荐
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The video includes fabricated audio of Tkachuk referring to Canadians as “maple syrup eating (expletive),” with the expletive bleeped out. The video carries a note saying it “contains AI-generated media.”