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为了满足海上作业日益增长的重型起重任务的需要,在短期内应设计制造出新设备来。当然,陆上设备的使用经验被用来开发这类新设备。结果所形成的破坏促使有关当局把许多海上起重机的使用能力降低50%。最后对回转
In order to meet the needs of the growing heavy lifting task at sea, new equipment should be designed and manufactured in the short term. Of course, the experience of using land-based equipment was used to develop such new equipment. The resulting destruction has prompted the authorities to reduce the capacity of many offshore cranes by 50%. The last turn