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 34 29.3%
2 United States 27 23.3%
3 Netherlands 16 13.8%
4 Russia 8 6.9%
5 Singapore 7 6%
6 France 5 4.3%
7 Germany 4 3.4%
8 Japan 4 3.4%
9 Hong Kong 3 2.6%
10 Czech Republic 2 1.7%
11 Brazil 2 1.7%
12 Canada 2 1.7%
13 India 1 0.9%
14 Taiwan 1 0.9%