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 427 39.8%
2 United States 313 29.2%
3 Netherlands 150 14%
4 Germany 83 7.7%
5 Canada 19 1.8%
6 Sweden 16 1.5%
7 Russia 12 1.1%
8 France 10 0.9%
9 Korea, Republic of 9 0.8%
10 Hong Kong 8 0.7%
11 Denmark 5 0.5%
12 Japan 4 0.4%
13 India 3 0.3%
14 Ukraine 3 0.3%
15 Ghana 2 0.2%
16 Estonia 2 0.2%
17 Slovakia 2 0.2%
18 South Africa 2 0.2%
19 Thailand 1 0.1%
20 United Kingdom 1 0.1%