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 450 42.8%
2 United States 210 20%
3 Netherlands 203 19.3%
4 Germany 86 8.2%
5 France 40 3.8%
6 Canada 18 1.7%
7 Sweden 9 0.9%
8 Korea, Republic of 7 0.7%
9 Russia 6 0.6%
10 Hong Kong 6 0.6%
11 United Kingdom 5 0.5%
12 Norway 3 0.3%
13 Switzerland 2 0.2%
14 Argentina 2 0.2%
15 India 1 0.1%
16 Ireland 1 0.1%
17 Taiwan 1 0.1%
18 Ukraine 1 0.1%
19 Poland 1 0.1%