single-cantilever gantry crane

例句：

1. 1.The single-cantilever gantry crane is used for lifting heavy loads.
   单悬臂式起重机用于吊起重物。
2. 2.The construction site needed a large single-cantilever gantry crane to move the equipment.
   施工现场需要一台大型的单悬臂式起重机来移动设备。
3. 3. The single-cantilever gantry crane was designed to be lightweight and easy to maneuver.
   单悬臂式起重机设计轻便且易于操控。