Drawing on idea of genetics, a staged hybrid genetic algorithm ( SHMGA ) with multi - group ( SHMGA ) is proposed.

借鉴生物遗传学提出了一种多群体阶段性杂交 遗传 算法.

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Leveling type is sextuple structure of leveling roller, complete support roller plus multi - group backing roller.

校平型式为校平辊, 整长托辊加多组支承辊六重 式 结构.

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