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 203 52.9%
2 United States 98 25.5%
3 Germany 39 10.2%
4 Iran, Islamic Republic of 11 2.9%
5 Netherlands 10 2.6%
6 Ireland 8 2.1%
7 Russia 5 1.3%
8 Singapore 2 0.5%
9 Turkey 2 0.5%
10 Romania 2 0.5%
11 Korea, Republic of 2 0.5%
12 Mexico 2 0.5%