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 209 44.1%
2 United States 137 28.9%
3 Germany 33 7%
4 Netherlands 23 4.9%
5 Taiwan 20 4.2%
6 Russia 11 2.3%
7 Hong Kong 11 2.3%
8 Canada 9 1.9%
9 Singapore 5 1.1%
10 Spain 2 0.4%
11 Sweden 2 0.4%
12 India 2 0.4%
13 Czech Republic 2 0.4%
14 France 2 0.4%
15 Kyrgyzstan 2 0.4%
16 Mexico 2 0.4%
17 Ireland 1 0.2%
18 Viet Nam 1 0.2%