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 180 57.5%
2 Germany 57 18.2%
3 United States 53 16.9%
4 Canada 5 1.6%
5 Taiwan 4 1.3%
6 Japan 3 1%
7 Hong Kong 2 0.6%
8 Ireland 2 0.6%
9 Burkina Faso 2 0.6%
10 Belgium 1 0.3%
11 Malaysia 1 0.3%
12 Moldova, Republic of 1 0.3%
13 Netherlands 1 0.3%
14 Portugal 1 0.3%