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 643 65.9%
2 United States 134 13.7%
3 Netherlands 94 9.6%
4 Germany 50 5.1%
5 Russia 12 1.2%
6 Canada 12 1.2%
7 France 8 0.8%
8 Singapore 5 0.5%
9 Hong Kong 4 0.4%
10 India 3 0.3%
11 Taiwan 3 0.3%
12 Switzerland 2 0.2%
13 Ireland 2 0.2%
14 Italy 1 0.1%
15 Spain 1 0.1%
16 United Kingdom 1 0.1%