BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 57 36.3%
2 United States 41 26.1%
3 Germany 18 11.5%
4 Netherlands 16 10.2%
5 Hong Kong 5 3.2%
6 Czech Republic 3 1.9%
7 Canada 3 1.9%
8 Taiwan 3 1.9%
9 Korea, Republic of 2 1.3%
10 Hungary 2 1.3%
11 Ireland 1 0.6%
12 Japan 1 0.6%
13 Malaysia 1 0.6%
14 Portugal 1 0.6%
15 Singapore 1 0.6%
16 Sweden 1 0.6%
17 Switzerland 1 0.6%