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catalyst

['kæt(ə)lɪst] 名词
医疗的 حَفَّاز
石油/石油 حفاز
酸学 مادة محفزة/ مساعدة   ؛عامل وسيط / حفاز
catalyst A substance whose presence alters the rate at which a chemical reaction proceeds, but whose own composition remains unchanged by the reaction. Catalysts are usually employed to accelerate reactions(positive catalyst), but retarding (negative) catalysts are also used ['kæt(ə)lɪst] 名词
环境 محفز - حفاز
 英语 词库
catalyst ['kæt(ə)lɪst] 缩写
缩写, 聚合物 cat
catalyst
: 5 短语, 2 学科
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