关于halogens的百科

• halogens造句怎么写

• StudyonLow-halogensFlame-retardantPVC/PNBRThermoplasticElastomer;oneofvariouscompoundsofcarbonandanyofthehalogens.AllthehalogensrequireonemoreelectrontocompleteaP-shell.Acompound,suchasafluorocarbon,thatconsistsofcarbonandoneormorehalogens.anonmetall...
• 2021-12-1123766