When and where a charged particle with given energy will enter or leave the magnetic field in a mass spectrometer, and how we use quantum mechanics to calculate them are interesting problems.
一个已知能量的带电粒子在质谱仪中于何时何地进入和离开磁场，如何用量子力学来计算是个很有意思的问题。
When and where a charged particle with given energy will enter or leave the magnetic field in a mass spectrometer, and how we use quantum mechanics to calculate them are interesting problems.
一个已知能量的带电粒子在质谱仪中于何时何地进入和离开磁场，如何用量子力学来计算是个很有意思的问题。
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