In the case of the debate over the sphericity of the earth, astronomical instruments and calculating tools partially bridged the cultural incommensurability.

• 在地圆说传入的个案中，仪器和计算方法扮演著桥梁的角色，使得中国的历算家在实际测算的过程中，理解西方地圆说在现象界的呈现和运用。