BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 United States 89 35.9%
2 China 71 28.6%
3 Germany 18 7.3%
4 Netherlands 18 7.3%
5 Korea, Republic of 15 6%
6 Sweden 14 5.6%
7 Cote D'ivoire 7 2.8%
8 Australia 3 1.2%
9 Hong Kong 3 1.2%
10 India 2 0.8%
11 Azerbaijan 2 0.8%
12 Russia 2 0.8%
13 Spain 1 0.4%
14 Romania 1 0.4%
15 Taiwan 1 0.4%
16 Japan 1 0.4%