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In this Feynman diagram an electron (e−) and a positron (e+) annihilate producing a photon (γ represented by the sine wave) is a pictorial representation of the mathematical expressions describing
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  • 矢量:可随意调整尺寸
  • 大图:4000 × 4000 像素·33.87 cm × 33.87 cm·300dpi·JPG