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 United States 163 44.5%
2 China 100 27.3%
3 Netherlands 26 7.1%
4 Germany 25 6.8%
5 Korea, Republic of 12 3.3%
6 France 7 1.9%
7 Canada 7 1.9%
8 Switzerland 6 1.6%
9 Brazil 4 1.1%
10 Norway 4 1.1%
11 Hong Kong 3 0.8%
12 United Kingdom 3 0.8%
13 India 1 0.3%
14 Taiwan 1 0.3%
15 Romania 1 0.3%
16 Russia 1 0.3%
17 Slovenia 1 0.3%
18 Sweden 1 0.3%