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 666 50.3%
2 Netherlands 247 18.7%
3 United States 196 14.8%
4 Germany 96 7.3%
5 France 37 2.8%
6 Korea, Republic of 34 2.6%
7 Canada 19 1.4%
8 Sweden 14 1.1%
9 United Kingdom 6 0.5%
10 India 3 0.2%
11 Hong Kong 1 0.1%
12 Finland 1 0.1%
13 Norway 1 0.1%
14 Romania 1 0.1%
15 Russia 1 0.1%
16 Singapore 1 0.1%