oil derricks
油井架
derricks in action
井架在运作
mobile derricks
移动井架
derricks and rigs
井架和钻机
derricks for drilling
钻井用井架
derricks on site
现场井架
fixed derricks
固定井架
derricks installation
井架安装
derricks maintenance
井架维护
derricks operation
井架操作
the construction site was filled with tall derricks.
建筑工地上高高耸立着许多吊杆。
workers operated the derricks to lift heavy materials.
工人们操作吊杆来提升重物。
the oil derricks were visible from miles away.
油井吊杆在数英里外就能看见。
safety precautions are essential when using derricks.
使用吊杆时安全措施至关重要。
modern derricks can reach great heights.
现代吊杆可以达到很高的高度。
the crew inspected the derricks for any damage.
工作人员检查了吊杆是否有损坏。
many derricks are automated for efficiency.
许多吊杆都是自动化的，以提高效率。
he specializes in the maintenance of offshore derricks.
他专门负责海上吊杆的维护。
they erected several derricks for the new project.
他们为新项目搭建了几座吊杆。
the derricks swayed slightly in the wind.
吊杆在风中轻微摇摆。
oil derricks
油井架
derricks in action
井架在运作
mobile derricks
移动井架
derricks and rigs
井架和钻机
derricks for drilling
钻井用井架
derricks on site
现场井架
fixed derricks
固定井架
derricks installation
井架安装
derricks maintenance
井架维护
derricks operation
井架操作
the construction site was filled with tall derricks.
建筑工地上高高耸立着许多吊杆。
workers operated the derricks to lift heavy materials.
工人们操作吊杆来提升重物。
the oil derricks were visible from miles away.
油井吊杆在数英里外就能看见。
safety precautions are essential when using derricks.
使用吊杆时安全措施至关重要。
modern derricks can reach great heights.
现代吊杆可以达到很高的高度。
the crew inspected the derricks for any damage.
工作人员检查了吊杆是否有损坏。
many derricks are automated for efficiency.
许多吊杆都是自动化的，以提高效率。
he specializes in the maintenance of offshore derricks.
他专门负责海上吊杆的维护。
they erected several derricks for the new project.
他们为新项目搭建了几座吊杆。
the derricks swayed slightly in the wind.
吊杆在风中轻微摇摆。
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