.
.
"2019-03-04 17:29:46.0" .
"SDN:P07::CF12N347" .
.
"\"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). A chemical or biological species denoted by X may be described by a single term such as \"nitrogen\" or a phrase such as \"nox_expressed_as_nitrogen\". The chemical formula of carbon monoxide is CO."@en .
.
.
.
"SDN:P07::CF12N347" .
"2" .
.
.
"2019-03-04 17:29:46.0" .
"mass_fraction_of_carbon_monoxide_in_air"@en .
"2" .
"SDN:P07::CF12N347" .
.
"false" .
"" .
"accepted"@en .
.