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 71 33.8%
2 United States 52 24.8%
3 Netherlands 21 10%
4 Germany 17 8.1%
5 Russia 14 6.7%
6 Korea, Republic of 7 3.3%
7 Canada 6 2.9%
8 Hong Kong 4 1.9%
9 Romania 4 1.9%
10 Norway 3 1.4%
11 India 3 1.4%
12 Japan 2 1%
13 Australia 2 1%
14 France 2 1%
15 Slovenia 1 0.5%
16 United Kingdom 1 0.5%