air-feed leg drill 气腿式钻机

air-leg rock drill [矿业] 气腿式凿岩机

leg rock drill 气腿式凿岩机

air-leg diamond drill 气腿式金刚石钻机

feed leg drill 气腿式钻机

drill-through-the-leg platform 过腿柱钻井的平台

high-frequency air-leg rock drill 高频气腿式凿岩机

leg drill 气腿式钻机

pusher leg drill 气腿式凿岩机