BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 United States 22 31%
2 China 20 28.2%
3 Germany 12 16.9%
4 Netherlands 6 8.5%
5 Romania 3 4.2%
6 India 3 4.2%
7 Republic of Korea 2 2.8%
8 Belgium 1 1.4%
9 Korea, Republic of 1 1.4%
10 Denmark 1 1.4%