【摘要】 选择与库仑定律形式完全相同的磁荷库仑定律及安培分子电流假说作为基础，导出了磁学中的基本定律———毕奥－萨伐尔定律，从而进一步阐明了静电和静磁现象的内在对称性，有助于对磁介质本质的理解．更多还原

【Abstract】 In the basis of the coulomb’s law of magnetic charge which has the same form with coulomb’s law and Ampere’s assumption of molecular electric current, the fundamental law of magnetism-Biot-Savart law is obtained. The intrinsic symmetries between static electricity and static magnetism are explained further that the properties of magnetic media may be understood more clearly.更多还原