BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 52 36.4%
2 Germany 35 24.5%
3 China 20 14%
4 Netherlands 10 7%
5 Korea, Republic of 5 3.5%
6 United Kingdom 4 2.8%
7 India 4 2.8%
8 Canada 3 2.1%
9 France 3 2.1%
10 Hong Kong 2 1.4%
11 Japan 2 1.4%
12 Taiwan 1 0.7%
13 Iran, Islamic Republic of 1 0.7%
14 Estonia 1 0.7%