烟煤bitumastic coal;gas coal详细»
烟煤bitumen lepideum;bituminite;bituminous coal;carbo lapideus;hartleyite;lithanthrax;metallophyton;pechkohle;ring coal;sea coal详细»
烟煤bituminous coal详细»
烟煤〔名词〕bituminous coal详细»
烟煤〔名词〕bituminous coal,bituminous-coal详细»
烟煤bitumastic coal bituminite bituminous coal bitumite black coal pitch coal soft coal splinter-详细»
烟煤bituminous coal;gas coal;soft coal详细»