主题:【讨论】下面关于质谱正确的是?【基础知识回顾】

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Question  (One or more correct answers)
      For the mass spectrometer it is true that


A) the magnetic field of the analyzing magnet varies synchronously with the potential used in the ion optics
B) the detector consists of a current measuring device
C) the resolution is at most 0.1 mass unit for heavy elements
D) isotopic ratios can not be determined
E) the mass of the ions is proportional to their bending radius in the analyzing magnetic field
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the mass of the ions is proportional to their bending radius in the analyzing magnetic field
离子的质量与它们在磁场分析器中的轨道半径成比例
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