vdvm\frac{\mathrm{v}_{\mathrm{d}}}{\mathrm{v}_{\mathrm{m}}}vmvd=ρd/ρm=\sqrt{\rho_{\mathrm{d}} / \rho_{\mathrm{m}}}=ρd/ρm
vdvm\frac{\mathrm{v}_{\mathrm{d}}}{\mathrm{v}_{\mathrm{m}}}vmvd=ρm/ρd=\sqrt{\rho_{\mathrm{m}} / \rho_{\mathrm{d}}}=ρm/ρd
vdvm\frac{\mathrm{v}_{\mathrm{d}}}{\mathrm{v}_{\mathrm{m}}}vmvd=ρmρd=\frac{\rho_{\mathrm{m}}}{\rho_{\mathrm{d}}}=ρdρm
vdvm\mathrm{v}_{\mathrm{d}} \mathrm{v}_{\mathrm{m}}vdvm=ρdρm=\rho_{\mathrm{d}} \rho_{\mathrm{m}}=ρdρm