High-speed imaging reveals that the squeak of soft–rigid frictional interfaces, like sneakers sliding on a basketball court, arises from intersonic opening slip pulses—analogous to earthquake ruptures—that thin ridges on the rubber confine to repeat at a musical frequency.
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New analysis of Apollo Moon samples finally settles debate: « For decades, scientists have argued whether the Moon had a strong or weak magnetic field during its early history (3.5 - 4 billion years ago). Now a new analysis shows that both sides of the debate are effectively correct. »，更多细节参见Line官方版本下载
3014248910http://paper.people.com.cn/rmrb/pc/content/202602/27/content_30142489.htmlhttp://paper.people.com.cn/rmrb/pad/content/202602/27/content_30142489.html11921 十四届全国人大常委会举行第六十三次委员长会议
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