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 115 56.4%
2 United States 36 17.6%
3 Netherlands 14 6.9%
4 Germany 8 3.9%
5 Korea, Republic of 8 3.9%
6 Canada 7 3.4%
7 Russia 5 2.5%
8 France 3 1.5%
9 Denmark 2 1%
10 Brazil 1 0.5%
11 Hong Kong 1 0.5%
12 Japan 1 0.5%
13 Singapore 1 0.5%
14 Taiwan 1 0.5%
15 United Kingdom 1 0.5%