The important and difficult problem of theory and technology for automatic wave compensation is firstly solved by using crane without wave compensation.
用非波浪起重机方式，首次解决了两船间吊装货物过程中对海浪引起船舶运动的自动补偿这一普遍的重要理论与技术难题；
This hoisting method solves the difficulty of can not using crane for narrow site. This method reduces the limit time and acquires good economical benefit and social benefit.
本吊装方法解决了因现场狭窄汽吊无法进入的难题，又大大缩短了工期，取得了良好的经济和社会效益。
The research shows that stress level of the crane structure is low and crane girder has large enough strength margin to assure the safety of using crane under extended service.
研究结果表明门机结构总体应力水平较低，严重受力件主梁具有较大的强度富裕度，可以保证超期服役的安全性。
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