mechanized derrick rig 机械化吊杆装置 ; 改良型吊杆装置
derrick rig system 吊杆装卸装置
triple derrick drilling rig 三层井架钻机
to rig a derrick 整理吊杆
oil rig derrick 石油钻机井架
rig derrick 钻机井架
drilling rig derrick 钻机井架
Derrick is the main supporting parts of drilling rig. It bears much static and dynamic load under different conditions. So there are high requirements for design and performance of derrick.
钻机井架作为石油钻机的主要承载部件，在不同工况下承受多种动、静载荷的作用，对其结构的设计和使用性能有着严格的要求。
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。
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