矿业词汇
双线平巷 double track heading双轨斜井 double tracked incline双轨上山 double tracked plane复式岩心管 double tube core barrel双键 double union双工炸区 double unit补充柱 double up post鸠尾接合 dovetail joint合缝销 dowel下坡 down grade地下岩盐开采 down to earth salt production进风 downcast air进风井 downcast shaft下部掏槽 downcut下向通风 downdraft向下炮眼 downhole注下 downpour下向的 downward下降流下向流 downward current下行开采 downward mining下向通风 downward ventilation下行开采 downward working推土机 dozer通风 draft吸入管 draft tube语际翻译 版权所有
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