滚子轴承 gǔnzizhóuchéng roller bearing Origin Definitions Defs Strokes Stroke Words Sentences Sents 滚子 滾子 gǔnzi roller a cylindrical object that rolls to reduce friction or move items, such as those used in bearings or conveyor belts轴承 軸承 zhóuchéng bearing a mechanical part that supports a rotating shaft, allowing it to turn smoothly while maintaining a precise position