Tony Jolliffe BBC
总的来说，我和孩子都有进步，也都有不足，新的一年，我也应该跟着孩子一同成长。
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"But I'm going to tell you it is harder to be a parent than to be a space shuttle commander," she laughs.
"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.