coal shale
- 网络煤质页岩;煤矸石
 coal shale
coal shalecoal shale
煤质页岩
Dictionary | 行业术语  | Page 5... ... 541 coal rank 煤品级 542 coal shale 煤质页岩 543 coal slack 煤矸石、煤屑 ... 
                煤矸石
Coal char_翻译 ... 煤燃烧: Coal combustion 煤矸石: coal shale 普通煤: raw coal ... 
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