halogens的精選

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用“halogens”造句大全，halogens造句

用“halogens”造句大全，halogens造句

2021-12-11
StudyonLow-halogensFlame-retardantPVC/PNBRThermoplasticElastomer;oneofvariouscompoundsofcarbonandanyofthehalogens.AllthehalogensrequireonemoreelectrontocompleteaP-shell.Acompound,suchasafluorocarbon,t...