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 215 53.3%
2 United States 81 20.1%
3 Germany 33 8.2%
4 Netherlands 23 5.7%
5 Canada 15 3.7%
6 Sweden 11 2.7%
7 Russia 6 1.5%
8 Taiwan 6 1.5%
9 Singapore 4 1%
10 Hong Kong 4 1%
11 Switzerland 2 0.5%
12 United Kingdom 2 0.5%
13 France 1 0.2%