基本解釋[能源科學(xué)技術(shù)]水氣敺替英漢例句雙語例句Under gassy coal seam condition, the full-heading development is employed. Because of the fast heading a high rate of gas emission arises.在瓦斯含量較大的煤層採用綜掘掘進(jìn)巷道，由於掘進(jìn)速度快，出現(xiàn)了瓦斯湧出量過大的現(xiàn)象。Gas drainage in high gassy coal seam with low gas permeability is always an hard solved significant technology problem in the process of safety production.高瓦斯低透性煤層的瓦斯抽放，一直是煤鑛安全生産過程中的重大技術(shù)難題。high gassy seam更多例句詞組短語短語high gassy coal seam 高瓦斯煤層high gassy seam更多詞組專業(yè)釋義能源科學(xué)技術(shù)水氣敺替