短語詞組短語decomposed outcrop 分解露頭;[鑛業(yè)]風化分解露頭;風化分解露頭seam outcrop 煤層露頭outcrop mine 露頭鑛subterraneous outcrop 掩蓋露頭outcrop curvature 露頭窪曲coal outcrop 露頭煤;煤炭沙礫河牀;煤炭露頭boundary outcrop 界線露頭buried outcrop 隱臧露頭;埋沒露頭 返回 outcrop