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 263 59.2%
2 United States 75 16.9%
3 Germany 30 6.8%
4 Canada 27 6.1%
5 Netherlands 9 2%
6 Russia 5 1.1%
7 Taiwan 5 1.1%
8 Hong Kong 5 1.1%
9 France 4 0.9%
10 Singapore 4 0.9%
11 Nigeria 4 0.9%
12 South Africa 3 0.7%
13 Ireland 3 0.7%
14 Japan 3 0.7%
15 India 2 0.5%
16 Denmark 2 0.5%