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介绍了56个国家动力煤和炼焦煤的煤炭产量、煤炭消耗、煤炭进出口、煤炭海运贸易和运煤船只的中期走势。
The medium-term trends in coal production, coal consumption, coal import and export, coal seaborne trade and coal-handling vessels from 56 countries for thermal coal and coking coal were introduced.