Belt and Road proves global flexibility outshines rigid rules
Editor's Note:After a decade of transformative infrastructure projects, what's next for the Belt and Road Initiative (BRI)? Can it
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栋察宇宙（三）：刚体的定轴转动动能定理
刚体定轴转动是经典力学中的重要研究对象，其动能定理揭示了外力矩做功与刚体转动动能变化的本质联系。掌握该定理对理解机械能守恒、分析旋转系统（如飞轮、陀螺仪）的运动特性具有重要意义。
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