rock core drill
常见例句
- A drill bit used for obtaining core samples in concrete or rock formations.
钻头被用来在水泥或岩层获取岩芯样品。 - This allows the bit to drill around a central cylinder of rock, which is taken in through the bit and into the core barrel.
这样允许钻头围绕岩石的中心圆柱体钻进，并通过钻头进入取芯桶。
www.infopetro.com.cn - In its Fruta del Norte site a drill core showed a rich 32 troy ounces of gold per ton of rock.
FORBES: Latin Mining Via Toronto 返回 rock core drill