构造了带电粒子在电磁场中的作用量，借助于保守力系的拉格朗日方程，导出了麦克斯韦方程中的两个式子。

By constructing principal function of a charged particle in electromagnetic field and using conservative system's Lagrange equation two formulas in Maxwell's equations are induced.

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构造了带电粒子在电磁场中的作用量，借助于保守力系的拉格朗日方程，导出了麦克斯韦方程中的两个式子。

By constructing principal function of a charged particle in electromagnetic field and using conservative system's Lagrange equation two formulas in Maxwell's equations are induced.

youdao