bastard coal
词语： bastard coal
解释： 硬煤
词典： 进出口专业英汉词典
bastard coal 相关解释
bastard coal 〔名词〕硬煤
bastard coal 〔名词〕顶板中薄煤夹层,高灰分煤
bastard coal 〔名词〕硬煤
硬煤 coal stone;hard coal
硬煤 hard coal
硬煤 anthracite
硬煤 hard coal
硬煤 hard coal
硬煤 bastard coal hard coal solid coal