(Table 1) Major element concentrations in glass shards of marine tephra in co...
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Scanning electron microscope (SEM) JEOL coupled with an X-ray energy dispersion spectrometer (EDS) at 15 kV and 0.3 nA
日本电子(JEOL)生产的扫描电子显微镜(Scanning Electron Microscope,SEM)配套X射线能谱仪(X-ray Energy Dispersion Spectrometer,EDS),工作参数为15千伏(kV)与0.3纳安(nA)



