An oil derrick is a necessary supporting frame, and plays an important role in oil production.

采油井架钢结构是钻采石油时所必需的支架结构，对油田生产起着重要作用。

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Many domestic production units have been using static test method as structural mechanics performance test of derrick from the past till these days.

过去乃至目前，对石油井架的结构力学特性试验，国内许多用户仍普遍采用静力试验方法。

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