The contents of about 20 kinds of elements were determined with proton induced X-ray emission (PIXE) technique.
使用质子激发X射线荧光分析方法（PIXE）测定颗粒物中近20种元素。
The elemental contents were analyzed by proton induced X-ray emission (PIXE).
用质子激发X荧光（PIXE）分析了其元素含量。
The elemental contents were analyzed by proton induced X-ray emission (PIXE).
用质子激发X荧光（PIXE）分析了其元素含量。
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