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 United States 43 31.4%
2 China 34 24.8%
3 Netherlands 24 17.5%
4 Russia 9 6.6%
5 Germany 8 5.8%
6 Hong Kong 4 2.9%
7 Japan 3 2.2%
8 Portugal 3 2.2%
9 Peru 2 1.5%
10 Korea, Republic of 2 1.5%
11 Australia 2 1.5%
12 Canada 1 0.7%
13 Finland 1 0.7%
14 France 1 0.7%