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 95 38.5%
2 China 85 34.4%
3 Netherlands 15 6.1%
4 Japan 12 4.9%
5 Canada 12 4.9%
6 Korea, Republic of 6 2.4%
7 India 5 2%
8 Russia 3 1.2%
9 Singapore 3 1.2%
10 Brazil 2 0.8%
11 France 2 0.8%
12 Germany 2 0.8%
13 Czech Republic 1 0.4%
14 Egypt 1 0.4%
15 Finland 1 0.4%
16 United Kingdom 1 0.4%
17 Moldova, Republic of 1 0.4%