Leonardo da Vinci is usually credited with conducting the first systematic study of friction in the late 15th century, a subfield now known as tribology that deals with the dynamics of interacting surfaces in relative motion. Da Vinci's notebooks depict how he pulled rows of blocks using weights and pulleys, an approach that is still used in frictional studies today, as well as examining the friction produced in screw threads, wheels, and axles. The authors of this latest paper used an experimental setup similar to da Vinci's.
同年12月，与游戏公司CD Projekt RED携手，推出了限量版《赛博朋克2077》主题Luma系列眼镜。此外，VITURE进一步拓展了在北美的零售渠道，在美国200家百思买（Best Buy）门店推出。此前为止，XR眼镜主要通过在线渠道提供，VITURE的首次门店亮相成为整个类别的重要里程碑，使购物者能够亲眼看到、亲身体验空间计算，不再局限于在线购物体验。VITURE负责人表示：“我们正在使扩展现实像其他任何消费技术一样易于接触”。，推荐阅读同城约会获取更多信息
Семен Александров (старший редактор отдела Мир)，详情可参考51吃瓜
Higher in the sky, Uranus will be sitting in the constellation Taurus and won't set until around midnight, giving skywatchers with the right equipment a better chance of tracking it down.
我拿起她的小米手机，帮她设置了三道技术防线：第一，在设置里开启“禁止安装非官方应用来源”，从根本上杜绝了木马病毒的植入；第二，设置呼叫限制，拦截所有陌生号码的来电；第三，启用短信过滤，屏蔽非联系人发来的信息。