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 237 61.1%
2 United States 61 15.7%
3 Germany 30 7.7%
4 Netherlands 21 5.4%
5 Canada 16 4.1%
6 France 4 1%
7 United Kingdom 4 1%
8 Taiwan 3 0.8%
9 Turkmenistan 2 0.5%
10 Georgia 2 0.5%
11 India 2 0.5%
12 Ireland 2 0.5%
13 Sweden 2 0.5%
14 Russia 1 0.3%
15 Singapore 1 0.3%