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 171 43.7%
2 United States 124 31.7%
3 Germany 33 8.4%
4 Netherlands 26 6.6%
5 Canada 11 2.8%
6 Russia 9 2.3%
7 Japan 5 1.3%
8 Hong Kong 2 0.5%
9 Iraq 2 0.5%
10 France 2 0.5%
11 Sweden 2 0.5%
12 Taiwan 1 0.3%
13 United Kingdom 1 0.3%
14 Mauritius 1 0.3%
15 Singapore 1 0.3%