短語(yǔ)詞組短語(yǔ)run n of mine coal 原煤run of mine coal seam [鑛業(yè)]原煤層Run -of-mine coal 毛煤Method of sampling run -of-mine coal 生産煤樣採(cǎi)取方法long -flame run-of-mine gas coal 長(zhǎng)焰原煤 返回 run of mine coal