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 158 56.8%
2 United States 58 20.9%
3 Germany 35 12.6%
4 Netherlands 6 2.2%
5 Brazil 5 1.8%
6 India 3 1.1%
7 Switzerland 2 0.7%
8 Taiwan 2 0.7%
9 Ukraine 2 0.7%
10 France 2 0.7%
11 Hong Kong 2 0.7%
12 Russia 1 0.4%
13 Canada 1 0.4%
14 United Kingdom 1 0.4%