SEARCH Articles Figures Tables Atomic mass defined Atomic mass units defined Formula mass defined Imaging mass spectrometry defined Mass casualty incident defined Mass diffusivities axial, defined Mass diffusivities radial, defined Mass fraction, defined Mass number defined Mass percentages defined Molar mass defined Molar mass weight average, defined Molecular mass defined Number-average molar mass , defined Quantification of Analytical Data via Calibration Curves in Mass Spectrometry Using Certified Reference Materials or Defined Standard Solutions Resistance, mass transfer defined