单词	hydrazine
释义	hydrazine noun hy·​dra·​zine ˈhī-drə-ˌzēn  : a colorless fuming corrosive strongly reducing liquid base N2H4 used especially in fuels for rocket and jet engines also : an organic base derived from this compound Example Sentences Recent Examples on the Web However, the first launch was canceled when engineers noticed increased levels of hydrazine in the propulsion system. Joshua Hawkins, BGR, 14 July 2022 The launch was delayed from June 10 after teams detected hydrazine vapor in the spacecraft, and ultimately decided to replace the vehicle’s parachutes. Joe Mario Pedersen, Orlando Sentinel, 14 July 2022 Prior to launch, the telescope was fueled with 240 liters of hydrazine fuel and dinitrogen tetroxide oxidizer. Eric Berger, Ars Technica, 14 Jan. 2022 With this modernized upper stage, Russian officials hoped to move away from the toxic propellants—dinitrogen tetroxide and hydrazine—that power the Briz-M upper stage. Eric Berger, Ars Technica, 4 Jan. 2022 But highly oxidizing non-fossil chemical fuels, like liquid oxygen, liquid hydrogen or dinitrogen tetroxide combined with hydrazine are even more expensive, a bit dangerous to use and needed for rocket fuel. James Conca, Forbes, 6 Dec. 2021 Working for a venture backed by Harry F. Guggenheim in the 1950s, Mr. Steinberg experimented with hydrazine rocket-fuel production techniques. James R. Hagerty, WSJ, 23 June 2021 Russia's workhorse Proton rocket uses hydrazine for its first and second stages. Eric Berger, Ars Technica, 8 Sep. 2020 Burning hydrazine doesn't produce a combustion reaction, and both of the exhaust products, nitrogen and hydrogen, are clear. Jennifer Leman, Popular Mechanics, 22 Feb. 2021 See More Word History Etymology International Scientific Vocabulary First Known Use 1887, in the meaning defined above Medical Definition hydrazine noun hy·​dra·​zine ˈhī-drə-ˌzēn  : a colorless fuming corrosive strongly reducing liquid base N2H4 used in the production of various materials (as pharmaceuticals and plastics) also : an organic base derived from this compound
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