halon的精選

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用“halon”造句大全，halon造句

用“halon”造句大全，halon造句

2018-01-31
cleanagenthalonreplacementhalongasextinguishingsystemdibromotetrafluoroethane[halon2402][C2F4Br2]bromochlorodifluoromethane[halon1211][CF2BrCl]bromochlorodifluoromethane[BCF][halon1211]spaceprotectedb...