| 单词 | Ostwald process | 
| 释义 | Ostwald process [`ȯst´vält ´prä·sǝs]  CHEMICAL ENGINEERING An industrial preparation of nitric acid by the oxidation of ammonia; the oxidation takes place in successive stages to nitric oxide, nitrogen dioxide, and nitric acid; a catalyst of platinum gauze is used and high temperatures are needed.  | 
	
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