oil rig derrick

常见例句

By analyzing the wind disaster of oil rig derrick, the basic reasons of the By analyzing normal work or falls in the service drilling machine derrick in oilfield were analyzed.
从石油井架风灾害分析入手，客观分析了油田在役钻机井架不能正常工作或倾倒的根本原因。
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The principle of the aerodynamics is used to study the land wind field characteristic of the Daqing oil field and the wind load spectrum theory of oil rig derrick has been established.
运用空气动学原理，研究了大庆油田的陆地风场特性，进行了井架结构风载荷谱理论分析。