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 275 67.4%
2 United States 59 14.5%
3 Germany 31 7.6%
4 Canada 22 5.4%
5 Netherlands 4 1%
6 Singapore 3 0.7%
7 Sweden 2 0.5%
8 Belarus 2 0.5%
9 Australia 2 0.5%
10 Ireland 2 0.5%
11 Italy 1 0.2%
12 Mexico 1 0.2%
13 Hong Kong 1 0.2%
14 Austria 1 0.2%
15 Switzerland 1 0.2%
16 Taiwan 1 0.2%