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		船舶与海洋平台结构冰载荷的高性能扩展多面体离散元方法1)
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			HIGH-PERFORMANCE DILATED POLYHEDRAL BASED DEM FOR ICE LOADS ON SHIP AND OFFSHORE PLATFORM STRUCTURES1)
			 
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		 图3. 扩展多面体的包络函数随参数$k$的变化  | 
	
Fig.3. The envelope function of the dilated polyhedron under different parameter $k$  | 
	
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