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 68 44.4%
2 China 30 19.6%
3 Netherlands 22 14.4%
4 Czech Republic 13 8.5%
5 Korea, Republic of 6 3.9%
6 France 3 2%
7 Germany 2 1.3%
8 India 2 1.3%
9 Japan 2 1.3%
10 Australia 2 1.3%
11 Canada 1 0.7%
12 Finland 1 0.7%
13 Russia 1 0.7%