bottom hole rock surface
常见例句
- Required rate of irrigation fluid on the back to the bit to cut down ﹑ rock cuttings from the hole bottom red powder in a timely manner, and to reliably bring to the surface.
要求沖洗液的上返速率可能把鑽頭切削下來的巖屑﹑巖粉準時沖離孔底﹐竝可靠地攜帶到地表。 返回 bottom hole rock surface