Wheel (3500-3350 BC)

The invention of the wheel has been pivotal for technology in general, setting the foundation for future developments such as the water wheel, the cogwheel, and the spinning wheel. Modern descendants include the propeller, the jet engine, and the turbine. Pictured is the Wheel of the Etruscan chariot (ca. 530 BC)

车轮（公元前3500年到3350年）

车轮的发明对于技术的总体发展至关重要，为未来的进一步发展，如水车、齿轮、纺车的发明奠定了基础。车轮在现代的衍生物包括螺旋桨、喷气式发动机和涡轮机。图中是伊特鲁里亚双轮战车的车轮（约在公元前530年）。