煤炭液化是把固体煤炭通过化学加工过程，使其转化成为液体燃料、化工原料和产品的先进洁净煤技术。根据不同的加工路线，煤炭液化可分为直接液化和间接液化两大类。
Buzek先生既希望于煤炭的液化和气化技术，但至今尚未突破。
Mr Buzek pins his hopes on techniques to liquefy or gasify coal, but they are not yet developed.
介绍了水煤浆技术、煤气化和间接液化技术以及煤炭直接液化技术的国内外现状和发展趋势。
The status and development of technology in coal water slurry, gasification, direct and indirect liquefaction of coal in domestic and international scope were introduced.
煤制油技术主要有煤炭直接液化和煤炭间接液化两类。
The technology of coal transform oil includes two chief types: direct coal liquefaction and indirect coal liquefaction.
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