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 349 50.4%
2 United States 123 17.8%
3 Netherlands 92 13.3%
4 Germany 59 8.5%
5 Canada 18 2.6%
6 Korea, Republic of 10 1.4%
7 Russia 8 1.2%
8 India 6 0.9%
9 France 5 0.7%
10 United Kingdom 5 0.7%
11 Brazil 4 0.6%
12 Taiwan 3 0.4%
13 Ukraine 3 0.4%
14 Latvia 2 0.3%
15 Romania 2 0.3%
16 Singapore 1 0.1%
17 Chile 1 0.1%
18 Estonia 1 0.1%