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Chun-fang ZHANG, Wen-gao ZHAO, Shi-yao ZHENG, Yi-xiao LI, Zheng-liang GONG, Zhong-ru ZHANG, Yong YANG

图2 (A)核壳梯度材料的结构示意图[25]. 经许可转载,版权所有2009 Nature Publishing Group. (B) 全梯度材料的结构示意图[26]. 经许可转载, 版权所有2012 Nature Publishing Group.

Fig. 2 (A) Schematic diagram of the core-shell concentration gradient material[25]. Reprinted with permission, Copyright 2009 Nature Publishing Group. (B) Schematic diagram of full concentration gradient material[26]. Reprinted with permission, Copyright 2012 Nature Publishing Group.