短語詞組短語run n of mine coal 原煤run of mine coal seam [礦業(yè)]原煤層Run -of-mine coal 毛煤Method of sampling run -of-mine coal 生產(chǎn)煤樣采取方法long -flame run-of-mine gas coal 長(zhǎng)焰原煤 返回 run of mine coal