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单词 dioxide
释义 dioxide Chem.|daɪˈɒksaɪd, -sɪd|
[f. di-2 2 + oxide.]
An oxide formed by the combination of two equivalents of oxygen with one of the metal or metalloid, as Carbon dioxide CO2, Manganese dioxide MnO2.
Originally applied to an oxide containing two equivalents of the chlorous element: see di-2 2 ⁋.
1847in Craig.1854J. Scoffern in Orr's Circ. Sc. Chem. 491 Corresponding with the sub or di-oxide of copper.1869A. J. Jarman in Eng. Mech. 17 Dec. 330/1 The easiest way to prepare oxygen gas is to heat together in a retort three parts potassic chlorate with one part dioxide of manganese.1878Huxley Physiogr. 80 An invisible gas, known as carbon dioxide, or more commonly carbonic acid.
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