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 592 53.4%
2 United States 176 15.9%
3 Netherlands 163 14.7%
4 France 72 6.5%
5 Germany 48 4.3%
6 Canada 19 1.7%
7 Singapore 7 0.6%
8 Korea, Republic of 6 0.5%
9 Russia 6 0.5%
10 Hong Kong 4 0.4%
11 India 4 0.4%
12 United Kingdom 3 0.3%
13 Japan 2 0.2%
14 Guyana 2 0.2%
15 Australia 2 0.2%
16 Argentina 1 0.1%
17 Czech Republic 1 0.1%
18 Spain 1 0.1%