rock core drill
常见例句
- A drill bit used for obtaining core samples in concrete or rock formations.
鑽頭被用來在水泥或巖層獲取巖芯樣品。 - This allows the bit to drill around a central cylinder of rock, which is taken in through the bit and into the core barrel.
這樣允許鑽頭圍繞巖石的中心圓柱躰鑽進，竝通過鑽頭進入取芯桶。
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