Molecular formula :
nature : it refers to the quality of time units flow. Mass flow rate of the units often expressed as kg / h, kg / s and other forms of numerical flow with the same quality. Another said the flow rate, known as the volume flow rate. So if the fluid flow rate the quality of w, kg / h, the density of ρ, kg/m3, the volume flow rate V = w / ρ, m3 / h.
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