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 31 53.4%
2 Germany 6 10.3%
3 Poland 4 6.9%
4 China 4 6.9%
5 Singapore 3 5.2%
6 Russia 2 3.4%
7 Moldova, Republic of 2 3.4%
8 Iran, Islamic Republic of 2 3.4%
9 Israel 2 3.4%
10 Mauritius 1 1.7%
11 Netherlands 1 1.7%