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 52 46%
2 Germany 15 13.3%
3 Netherlands 14 12.4%
4 United States 10 8.8%
5 Russia 6 5.3%
6 India 4 3.5%
7 South Africa 2 1.8%
8 United Kingdom 2 1.8%
9 Czech Republic 2 1.8%
10 France 2 1.8%
11 Belgium 2 1.8%
12 Canada 1 0.9%
13 Italy 1 0.9%