1.  drill pipe
2.  drill rod
3.  drill stem

• 1. 钻杆: drill pipe | drill rod
• 2. 方钻杆: kelly | square drill rod
• 3. 方钻杆旋转器: kelly spinner

更多释义

• 1.在这些钻杆内我们没有发现缺陷。
  No defects did we find in these drill pipes.
  dict.yoduao.com
• 2.我们必须把这根钻杆截短。
  We must have this drill pipe shortened.
  dict.yoduao.com
• 3.这根钻杆和那根一样长。
  This drill pipe is if that one.
  dict.yoduao.com

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