貧煤
詞語: 貧煤
解釋: carbonaceous coal;lean coal;meagre coal
詞典: 冶金專業漢英詞典
貧煤 相關解釋
貧煤 carbonaceous coal
貧煤 lean coal;meager coal
貧煤 lean coal
貧煤 meagre coal
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