halon造句
cleanagenthalonreplacementhalongasextinguishingsystemdibromotetrafluoroethane[halon2402][C2F4Br2]bromochlorodifluoromethane[halon1211][CF2BrCl]bromochlorodifluoromethane[BCF][halon1211]spaceprotectedb...
cleanagenthalonreplacementhalongasextinguishingsystemdibromotetrafluoroethane[halon2402][C2F4Br2]bromochlorodifluoromethane[halon1211][CF2BrCl]bromochlorodifluoromethane[BCF][halon1211]spaceprotectedb...