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hydrogen fluoride▼(HF)noun[UK: ˈhaɪ.drə.dʒən ˈflʊə.raɪd] [US: ˈhaɪ.drə.dʒən ˈflʊ.ˌraɪd]
hydrofluoric acid [hydrofluoric acids]▼noun[UK: ˈhaɪ.drəʊ.fluː.ˈɒ.rɪk ˈæ.sɪd] [US: ˌhaɪdro.ʊ.fluː.ˈɔː.rɪk ˈæ.səd]
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