能量为E的粒子被某一势阱散射，如果推求总散射截面常常易忽视物理背景。
Particles of energy E are scattered by a certain potential well. In finding the total scattering cross section, the physical background are often ignored.
能量为E的粒子被某一势阱散射，如果推求总散射截面常常易忽视物理背景。
Particles of energy E are scattered by a certain potential well. In finding the total scattering cross section, the physical background are often ignored.
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