有關halogens的精選大全

用halogens造句子,“halogens”造句
StudyonLow-halogensFlame-retardantPVC/PNBRThermoplasticElastomer;oneofvariouscompoundsofcarbonandanyofthehalogens.AllthehalogensrequireonemoreelectrontocompleteaP-shell.Acompound,suchasafluorocarbon,t...
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