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 132 44.3%
2 United States 67 22.5%
3 Germany 31 10.4%
4 Canada 26 8.7%
5 Netherlands 17 5.7%
6 Hong Kong 6 2%
7 Russia 4 1.3%
8 Iran, Islamic Republic of 3 1%
9 Brazil 3 1%
10 Austria 2 0.7%
11 United Arab Emirates 2 0.7%
12 Romania 2 0.7%
13 France 1 0.3%
14 Mauritius 1 0.3%
15 India 1 0.3%