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 144 62.9%
2 United States 45 19.7%
3 Germany 12 5.2%
4 Netherlands 11 4.8%
5 Russia 4 1.7%
6 France 3 1.3%
7 United Kingdom 2 0.9%
8 Hong Kong 2 0.9%
9 India 1 0.4%
10 Japan 1 0.4%
11 Greece 1 0.4%
12 Singapore 1 0.4%
13 Taiwan 1 0.4%
14 Ukraine 1 0.4%