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 65 39.9%
2 China 48 29.4%
3 Germany 20 12.3%
4 France 6 3.7%
5 Czech Republic 5 3.1%
6 India 5 3.1%
7 Japan 5 3.1%
8 Korea, Republic of 3 1.8%
9 Hong Kong 2 1.2%
10 Russia 1 0.6%
11 Senegal 1 0.6%
12 Brazil 1 0.6%
13 Canada 1 0.6%