基本解釋薄煤層同根派生 thin-seam相關(guān)詞英漢例句Hereby the safety of the combined mining of thin seams under the close gob water was evaluated.根據(jù)分析的結(jié)果評(píng)價(jià)了臨界距離老空水下薄煤層聯(lián)合開采的安全性。thin-seam更多例句