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 170 36.4%
2 China 160 34.3%
3 Sweden 43 9.2%
4 Germany 34 7.3%
5 Netherlands 27 5.8%
6 Taiwan 8 1.7%
7 Canada 7 1.5%
8 France 3 0.6%
9 Hong Kong 3 0.6%
10 Japan 3 0.6%
11 Malaysia 2 0.4%
12 United Kingdom 2 0.4%
13 Brazil 1 0.2%
14 Switzerland 1 0.2%
15 Mauritius 1 0.2%
16 Ireland 1 0.2%
17 Chile 1 0.2%