揭煤
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cut through coal seam
贯通煤层
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It is the key to cut through coal seam safely and economically in highway tunnel construction that the fatalness of coal and gas outburst is predicted accurately.
在公路隧道揭穿煤层的施工中，揭煤突危险性的正确预测是安全、经济地揭穿煤层的关键。
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