短语词组短语brown n coal 褐煤earthy brown coal 土状褐煤BROWN COAL BRIQUETTES 褐煤砖pyropissitic brown coal 蜡质褐煤brown coal paste 褐煤浆brown coal shaping 褐煤成型brown coal boiler 褐煤锅炉brown coal ash 褐煤粉煤炭Xianfeng brown coal 先锋褐煤液化 返回 brown coal