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 224 52.8%
2 United States 58 13.7%
3 Germany 42 9.9%
4 Canada 39 9.2%
5 Netherlands 24 5.7%
6 Sweden 12 2.8%
7 Russia 6 1.4%
8 Singapore 6 1.4%
9 France 2 0.5%
10 Switzerland 2 0.5%
11 Taiwan 2 0.5%
12 Brazil 2 0.5%
13 Bulgaria 1 0.2%
14 Czech Republic 1 0.2%
15 Hong Kong 1 0.2%
16 India 1 0.2%
17 Malaysia 1 0.2%