divergence difficulty
... 费曼图 Feynman diagram 发散困难 divergence difficulty 重整化 renormalization ...
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功率密度的二阶矩方法可用于截断光束,并克服了光束质量因子的发散困难。
It is also shown that the second-order moment method of the power density is applicable to the truncated beams and overcomes the divergence difficulty of the beam quality factor.
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用场论来计算有明确物理含义的物理量时,所遇到的计算结果为无穷大的困难。
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