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關注：1
2013-05-23 12:21
求翻譯：The majority of the EM signal travels up the drill pipe, and leaks off through the surrounding formations and then returns to the opposite side of the Gap Sub.是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
The majority of the EM signal travels up the drill pipe, and leaks off through the surrounding formations and then returns to the opposite side of the Gap Sub.
問題補充： |
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