... five-membered ring 五元环; 五原子环 fixed ammonia 固定氨; 结合氨 fixed combustion source 固定床火箱; 固定床燃烧室 ...
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事实上已经有先例摆在我们的面前了，在1909年，一位名叫Fritz Haber的德国化学家发现了一种生产氨的方法：将氮(从空气中分离得到)和氢结合在一起。
Indeed, there is a telling historical precedent. In 1909 Fritz Haber, a German chemist, discovered a new way to combine nitrogen from the air with hydrogen to produce ammonia.
采用定性和定量rbi分析相结合方法对合成氨装置进行风险评估。
A method combining qualitative and quantitative RBI analysis is adopted to carry out risk assessment on the synthetic ammonia plant.
除臭原理是冰醋与氨结合，变成稳定性乙酸铵。
The principle is that acetic acid combined with ammonia and become stable chemicals acetic ammonia.
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