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 209 46%
2 United States 157 34.6%
3 Germany 25 5.5%
4 Canada 20 4.4%
5 Greece 8 1.8%
6 Japan 7 1.5%
7 Russia 7 1.5%
8 Netherlands 5 1.1%
9 Singapore 4 0.9%
10 France 3 0.7%
11 Hong Kong 3 0.7%
12 Sweden 2 0.4%
13 Taiwan 1 0.2%
14 South Africa 1 0.2%
15 Hungary 1 0.2%
16 Romania 1 0.2%