oil derricks
油井架
derricks in action
井架在運作
mobile derricks
移動井架
derricks and rigs
井架和鑽機
derricks for drilling
鑽井用井架
derricks on site
現場井架
fixed derricks
固定井架
derricks installation
井架安裝
derricks maintenance
井架維護
derricks operation
井架操作
the construction site was filled with tall derricks.
建築工地上高高聳立着許多吊杆。
workers operated the derricks to lift heavy materials.
工人們操作吊杆來提升重物。
the oil derricks were visible from miles away.
油井吊杆在數英里外就能看見。
safety precautions are essential when using derricks.
使用吊杆時安全措施至關重要。
modern derricks can reach great heights.
現代吊杆可以達到很高的高度。
the crew inspected the derricks for any damage.
工作人員檢查了吊杆是否有損壞。
many derricks are automated for efficiency.
許多吊杆都是自動化的，以提高效率。
he specializes in the maintenance of offshore derricks.
他專門負責海上吊杆的維護。
they erected several derricks for the new project.
他們爲新項目搭建了幾座吊杆。
the derricks swayed slightly in the wind.
吊杆在風中輕微搖擺。
oil derricks
油井架
derricks in action
井架在運作
mobile derricks
移動井架
derricks and rigs
井架和鑽機
derricks for drilling
鑽井用井架
derricks on site
現場井架
fixed derricks
固定井架
derricks installation
井架安裝
derricks maintenance
井架維護
derricks operation
井架操作
the construction site was filled with tall derricks.
建築工地上高高聳立着許多吊杆。
workers operated the derricks to lift heavy materials.
工人們操作吊杆來提升重物。
the oil derricks were visible from miles away.
油井吊杆在數英里外就能看見。
safety precautions are essential when using derricks.
使用吊杆時安全措施至關重要。
modern derricks can reach great heights.
現代吊杆可以達到很高的高度。
the crew inspected the derricks for any damage.
工作人員檢查了吊杆是否有損壞。
many derricks are automated for efficiency.
許多吊杆都是自動化的，以提高效率。
he specializes in the maintenance of offshore derricks.
他專門負責海上吊杆的維護。
they erected several derricks for the new project.
他們爲新項目搭建了幾座吊杆。
the derricks swayed slightly in the wind.
吊杆在風中輕微搖擺。
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