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 210 48.6%
2 United States 125 28.9%
3 Germany 44 10.2%
4 Netherlands 25 5.8%
5 Russia 5 1.2%
6 Canada 4 0.9%
7 Albania 3 0.7%
8 Guam 3 0.7%
9 Hong Kong 2 0.5%
10 Japan 2 0.5%
11 North Macedonia 2 0.5%
12 Romania 2 0.5%
13 Australia 1 0.2%
14 Macao 1 0.2%
15 Singapore 1 0.2%
16 Taiwan 1 0.2%
17 United Kingdom 1 0.2%