Keeping the drilling rig competitive meant fast moves between locations, a demand which saw the unitization of prime movers with rig components and sectionalized rig equipment for speedy handling.

• 原译：使鉆机保持竞争意味著位置之间的迅速移动。这就要求将原动机与鉆机部件装在一起和将鉆机设备分开以加速处理。