词语hard coal
解释硬煤,无烟煤,烟煤和无烟煤
词性名词
hard coal〔名词〕硬煤详细»
hard coal〔名词〕硬煤,无烟煤详细»
hard coal硬煤详细»
hard coal〔名词〕硬煤,无烟煤,硬煤,无烟煤,烟煤和无烟煤详细»
hard coal〔名词〕无烟煤详细»