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 United States 49 46.2%
2 China 12 11.3%
3 Netherlands 12 11.3%
4 Canada 8 7.5%
5 Portugal 7 6.6%
6 Iran, Islamic Republic of 5 4.7%
7 United Kingdom 4 3.8%
8 France 3 2.8%
9 Hong Kong 2 1.9%
10 Germany 1 0.9%
11 Finland 1 0.9%
12 Russia 1 0.9%
13 Spain 1 0.9%