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 70 41.2%
2 China 46 27.1%
3 Germany 11 6.5%
4 Canada 7 4.1%
5 Taiwan 7 4.1%
6 Czech Republic 6 3.5%
7 France 6 3.5%
8 Hong Kong 5 2.9%
9 Japan 3 1.8%
10 Senegal 3 1.8%
11 Bolivia, Plurinational State of 3 1.8%
12 Australia 1 0.6%
13 South Africa 1 0.6%
14 United Kingdom 1 0.6%