| 释义 |
drill collars短语¹⁴⁴⁹⁷²⁺²
基本例句
🌏钻铤
The people pay attention on raising the span of the usage of the thread of drill collars and preventing the accident of drill string thread failure.
预防钻柱螺纹失效事故发生和提高螺纹连接使用寿命的技术长期以来倍受关注。 cnki
The counterclockwise movement and the discontinuity of stresses are the important reasons of the failure of drill collars, centralizers and threads.
指出反进动和应力不连续是钻仅及稳定器与螺纹失效的重要原因。 cnki
This effect trickled down throughout the drilling industry and affected support equipment such as drill pipes, drill collars, and pump jacks.
这个结果慢慢地浸入到整个钻探行业并且影响到各种辅助设备，如钻管、钻杆和深井泵。 chinafanyi.com
They measured the length of drill collars yesterday.
他们昨天仗量了钻杆和钻链的长度。 hx41 |