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 283 46%
2 United States 122 19.8%
3 Netherlands 84 13.7%
4 Germany 64 10.4%
5 Canada 18 2.9%
6 France 9 1.5%
7 Russia 6 1%
8 United Kingdom 5 0.8%
9 Australia 5 0.8%
10 Nigeria 4 0.7%
11 Singapore 4 0.7%
12 Hong Kong 3 0.5%
13 Hungary 2 0.3%
14 Japan 2 0.3%
15 Taiwan 2 0.3%
16 Ukraine 2 0.3%