| 单词 | pyrosulphuric acid |
| 释义 | Word Frequency pyrosulphuric acid(ˌpaɪrəʊsʌlˈfjʊərɪk) noun a fuming liquid acid made by adding sulphur trioxide to concentrated sulphuric acid. Formula: H2S2O7 Also called: disulphuric acid. See also fuming sulphuric acid |
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