oil rig derrick

基本解释

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.
從石油井架風災害分析入手，客觀分析了油田在役鑽機井架不能正常工作或傾倒的根本原因。
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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.
運用空氣動學原理，研究了大慶油田的陸地風場特性，進行了井架結搆風載荷譜理論分析。