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 China 44 42.7%
2 United States 20 19.4%
3 Russia 8 7.8%
4 Netherlands 7 6.8%
5 Taiwan 4 3.9%
6 Canada 4 3.9%
7 France 4 3.9%
8 Germany 4 3.9%
9 Czech Republic 2 1.9%
10 Estonia 2 1.9%
11 Brazil 1 1%
12 Hong Kong 1 1%
13 India 1 1%
14 Korea, Republic of 1 1%