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		基于遗传算法的弹性地基加肋板肋梁无网格优化分析 1)
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			RIB MESHLESS OPTIMIZATION OF STIFFENED PLATES RESTING ON ELASTIC FOUNDATION BASED ON GENETIC ALGORITHM 1)
			 
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		 图 21. 种群的挠度平均值变化趋势  | 
	
Fig. 21. The trend of the average deflection of the population  | 
	
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