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 270 56.2%
2 United States 82 17.1%
3 Germany 49 10.2%
4 Netherlands 43 9%
5 Sweden 13 2.7%
6 Canada 9 1.9%
7 Russia 3 0.6%
8 United Kingdom 2 0.4%
9 Korea, Republic of 2 0.4%
10 Malaysia 2 0.4%
11 Austria 1 0.2%
12 Hong Kong 1 0.2%
13 India 1 0.2%
14 Singapore 1 0.2%
15 Taiwan 1 0.2%