单词：drill string
drill string的用法和样例：
例句
- The calculation results demonstrate the effective eccentricity and the lifting force of the upper drill string are the major influential factors.计算结果表明，有效偏心距和上部钻柱的提升力是影响近井口套管偏磨的主要因素。
- A transmitter toroid induces a low-frequency current in the drillstring, which flows out of the bit and returns farther up the string.发射线圈在钻柱内感应出低频电流，从钻头流出，在钻柱上部返回。
单词：drill string 相关文章
我朋友 Jenny 的老板实在很糟糕。这两个月来，他一直让Jenny觉得自己有机会被提升为部门主管，所以就没完没了地加班，自我表现。其实我觉得，她老板根本就是在欺骗她，牵着她的鼻子走。
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