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 195 60.6%
2 United States 57 17.7%
3 Germany 43 13.4%
4 Canada 14 4.3%
5 Russia 2 0.6%
6 Senegal 2 0.6%
7 Singapore 2 0.6%
8 Switzerland 2 0.6%
9 Ukraine 2 0.6%
10 Moldova, Republic of 1 0.3%
11 Netherlands 1 0.3%
12 Peru 1 0.3%