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 100 60.2%
2 China 27 16.3%
3 Netherlands 15 9%
4 Germany 6 3.6%
5 Egypt 4 2.4%
6 Mexico 3 1.8%
7 Saudi Arabia 3 1.8%
8 Canada 2 1.2%
9 Iran, Islamic Republic of 2 1.2%
10 Colombia 2 1.2%
11 France 1 0.6%
12 Turkey 1 0.6%