将微分进化算法扩展到可求解混合变量、有约束的船舶主尺度优化问题。
In this paper, the DE algorithm was expanded to solve the mixed variables, restricted principal dimensions optimization.
通过下降主墩承台及整体北移桥墩，使通航尺度达到要求，且对船舶上行影响极小。
With descending of the main piers foundation slab and integral moving of pier, not only the navigable dimensions meet the demand, but also the influence on upbound ships is very li.
再次，利用多尺度法分析船舶在波浪中接近主共振、亚谐共振和超谐共振时的非线性横摇运动，并给出三种共振的近似解。
Moreover, the multiscale method was used to study the main, ultraharmonic and subharmonic resonances of nonlinear rolling in waves, and the approximate solutions of the three resonances were given.
首先从船型、主尺度和总布置图方面介绍该船的船舶概况；
First, the general description and feature of Yu Kun was presented based on her ship type, main particulars and the general arrangement.
首先从船型、主尺度和总布置图方面介绍该船的船舶概况；
First, the general description and feature of Yu Kun was presented based on her ship type, main particulars and the general arrangement.
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