目前，中国空间站已在轨部署和实施267项科学与应用项目，涉及空间生命科学与人体研究、微重力物理和空间新技术等领域，取得多项国际领先的应用与技术成果，部分成果已实现转移转化和推广应用，显著推动我国空间科学与应用快速发展。
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.
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