“钻杆”造句

综述了石油钻杆接头失效的十一种主要形式.
Eleven mare modes of tool joint failures are summarized.

那个钻杆的丝扣坏了, 换另外一根.
That pipe thread is bad. Use another one instead.

本文还介绍了微型钻杆测试系统压力瞬时分析方法.
A systematic pressure transient analysis method for mini - DSTs is also introduced.

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