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单词 nitrogen dioxide
释义

WordReference Random House Unabridged Dictionary of American English © 2024
nitrogen dioxide, [Chem.]
  1. Chemistrya reddish-brown, highly poisonous gas, NO2, used as an intermediate in the manufacture of nitric and sulfuric acids, and as a nitrating and oxidizing agent;
    a major air pollutant from the exhaust of internal combustion engines that are not fitted with pollution control devices.

Collins Concise English Dictionary © HarperCollins Publishers::
nitrogen dioxide n
  1. a red-brown poisonous irritating gas that, at ordinary temperatures, exists in equilibrium with dinitrogen tetroxide. It is an intermediate in the manufacture of nitric acid, a nitrating agent, and also an oxidizer for rocket fuels. Formula: NO2
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