双语例句
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The theory of electromagnetism swallowed up the theory of light.
磁电学说取代了光学论.
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Based on the classical theory of electromagnetism, the relation and the difference between OAM and the parameter of the beam in paraxial approximation are analyzed.
从经典电磁场理论出发，主要介绍了傍轴近似条件下，光束的轨道角动量和光束的参数之间的关系。