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【簡答題】翻譯:crude petroleum is not an equilibrium mixture, and on a geological time scale its composition is slowly changing. S.R.silverman found that heating at 121C for two weeks caused detectable changes, the low-molecular-weight components formed being isotopically lighter so far as the carbon was concerned, than the original.

答案: 天然石油不是均衡的混合物,在一個地質(zhì)時期,地質(zhì)構(gòu)造改變十分緩慢,S.R.silverman研究發(fā)現(xiàn),經(jīng)過兩周持續(xù)在121...
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【簡答題】翻譯:A paraffin base crude is an oil whose chief components are paraffins, and which completely distilled, leaves a solid residue of wax. An asphalt base crude is an oil composed primarily of cyclic compounds (mostly naphthenes) which, when distilled, leaves a solid residue of asphalt. Oils which fall in the middle of these categrories are classified as mixed base.

答案: 石蠟質(zhì)原油主要成分是石蠟,這種油被蒸餾后剩下的是蠟狀物的殘渣。瀝青質(zhì)原油以環(huán)狀成分為基本結(jié)構(gòu),這種油被蒸餾后剩下的也是蠟...
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