an inorganic polymer, of empirical formula pon, used as a flame retardant etc

listen to the pronunciation of an inorganic polymer, of empirical formula pon, used as a flame retardant etc
الإنجليزية - الإنجليزية
phosphorus oxynitride
an inorganic polymer, of empirical formula pon, used as a flame retardant etc

    الواصلة

    an in·or·gan·ic polymer, of em·pi·ri·cal for·mu·la pon, used as a flame re·tard·ant etc

    النطق

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