The limit could be improved by prolonging the effective free fall duration,thus then the EP test for rotating extended bodies with a torsion balance scheme is proposed.

• 实验主要受到陀螺内部摩擦耦合的影响,这可通过延长宏观旋转物体自由下落时间来减小陀螺内摩擦影响,随后课题组提出采用宏观旋转物体等效原理的扭秤方案实验检验。