. . "3" . . . "2020-02-03 16:02:30.0" . "SDN:P07::CFSN0542" . "Mass fraction is used in the construction mass_fraction_of_X_in_Y, where X is a material constituent of Y. It means the ratio of the mass of X to the mass of Y (including X)."@en . "" . "mass_fraction_of_rain_in_air"@en . "3" . "2020-02-03 16:02:30.0" . "true" . . . . . . "SDN:P07::CFSN0542" . . "SDN:P07::CFSN0542" . . . "deprecated"@en . .