短语词组短语rotary rock -drill 旋转钻石机Rock -drill 凿岩机electric rock rotary drill 岩石电钻rock core drill 钻取岩心样品;岩心钻rock rotary drill 岩石钻rock electric drill 岩石电钻rock -drill dust exhauster 凿岩机干式捕尘器soft -rock k drill 软岩钻机 返回 rock drill