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The mass fraction of liquid and gas phases is also called Liquid Quality and Vapour Quality correspondingly.
Fluid Mixture may develop few phases and in this case is called a Multiphase Fluid (see Multiphase Fluid vs Fluid Mixture).
See Also
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Natural Science / Chemistry / Chemical Substance / Mixture
[ Pure substance ][ Liquid Quality ]][ Vapour Quality ][ Vapour Liquid Equilibrium (VLE) ]
[ Multiphase Fluid vs Fluid Mixture ]
[ Binary Mixture ]