Multimedia digital sandbox
多媒体数字沙盘
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补浪河女子民兵治沙连数字沙盘
Bulang River Women's Militia Sand Control Company digital sand table -
电子集团投影数字沙盘
Electronic group projection -
红军转战陕北数字投影沙盘
The Red Army transferred to northern Shaanxi -
中剑集团电子沙盘
Zhongjian group Electronics