The president initially invited the women late Sunday, when he called to congratulate the men for their 2-1 overtime win over Canada. The women’s team was still in Milan, three days after also beating Canada 2-1 in overtime.
FT Edit: Access on iOS and web
。业内人士推荐夫子作为进阶阅读
"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.
Continue reading...