| 单词 | sulphur trioxide |
| 释义 | > as lemmassulphur trioxide sulphur trioxide n. ΚΠ 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xiii. 129 *Sulphur [1866 Sulphuric] Trioxide, or Sulphuric Anhydride. sulphur trioxide A compound of three atoms of oxygen with an element or radical; e.g. sulphur trioxide, SO3; nitrogen trioxide, N2O3. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > oxygen > [noun] > compounds > oxides > by proportion of oxygen tritoxide1806 oxidule1815 quadroxide1825 sesquioxide1831 pentoxide1851 tetroxide1866 trioxide1868 1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 134 A series of oxides containing quantities of oxygen in the proportion of the numbers 1, 2, 3, united with a constant quantity of another element, are distinguished as monoxide, dioxide, and trioxide respectively. 1911 H. E. Roscoe & C. Schorlemmer Treat. Chem. (ed. 4) I. 723 Boron Trioxide, B2O3,..is obtained when boron burns in the air, or in oxygen. < as lemmas |
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