coal-char
英['kəʊltʃ'ɑːr]
美['kəʊltʃ'ɑːr]
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相关词汇
coaldrop
coal
coal-rock combinations sample
coal mining with water pressure
coal mining and collapse period
coal roadway with large section
coal mining subsided water area
coal-conveying control system
Coal-burning gas fired boiler
coal rank distribution of China
coal-to-methanol technology
Coal-Chemical Industrial Base
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